Godeps, vendor: convert dependency management to trash (#3198)

This commit converts the dependency management from Godeps to the vendor
folder, also switching the tool from godep to trash. Since the upstream tool
lacks a few features proposed via a few PRs, until those PRs are merged in
(if), use github.com/karalabe/trash.

You can update dependencies via trash --update.

All dependencies have been updated to their latest version.

Parts of the build system are reworked to drop old notions of Godeps and
invocation of the go vet command so that it doesn't run against the vendor
folder, as that will just blow up during vetting.

The conversion drops OpenCL (and hence GPU mining support) from ethash and our
codebase. The short reasoning is that there's noone to maintain and having
opencl libs in our deps messes up builds as go install ./... tries to build
them, failing with unsatisfied link errors for the C OpenCL deps.

golang.org/x/net/context is not vendored in. We expect it to be fetched by the
user (i.e. using go get). To keep ci.go builds reproducible the package is
"vendored" in build/_vendor.

1 files changed, 0 insertions, 237 deletions

diff --git a/Godeps/_workspace/src/github.com/peterh/liner/common.go b/Godeps/_workspace/src/github.com/peterh/liner/common.go
deleted file mode 100644
index b6162b624..000000000
--- a/Godeps/_workspace/src/github.com/peterh/liner/common.go
+++ /dev/null
@@ -1,237 +0,0 @@
-/*
-Package liner implements a simple command line editor, inspired by linenoise
-(https://github.com/antirez/linenoise/). This package supports WIN32 in
-addition to the xterm codes supported by everything else.
-*/
-package liner
-
-import (
-	"bufio"
-	"container/ring"
-	"errors"
-	"fmt"
-	"io"
-	"strings"
-	"sync"
-	"unicode/utf8"
-)
-
-type commonState struct {
-	terminalSupported bool
-	outputRedirected  bool
-	inputRedirected   bool
-	history           []string
-	historyMutex      sync.RWMutex
-	completer         WordCompleter
-	columns           int
-	killRing          *ring.Ring
-	ctrlCAborts       bool
-	r                 *bufio.Reader
-	tabStyle          TabStyle
-	multiLineMode     bool
-	cursorRows        int
-	maxRows           int
-	shouldRestart     ShouldRestart
-}
-
-// TabStyle is used to select how tab completions are displayed.
-type TabStyle int
-
-// Two tab styles are currently available:
-//
-// TabCircular cycles through each completion item and displays it directly on
-// the prompt
-//
-// TabPrints prints the list of completion items to the screen after a second
-// tab key is pressed. This behaves similar to GNU readline and BASH (which
-// uses readline)
-const (
-	TabCircular TabStyle = iota
-	TabPrints
-)
-
-// ErrPromptAborted is returned from Prompt or PasswordPrompt when the user presses Ctrl-C
-// if SetCtrlCAborts(true) has been called on the State
-var ErrPromptAborted = errors.New("prompt aborted")
-
-// ErrNotTerminalOutput is returned from Prompt or PasswordPrompt if the
-// platform is normally supported, but stdout has been redirected
-var ErrNotTerminalOutput = errors.New("standard output is not a terminal")
-
-// Max elements to save on the killring
-const KillRingMax = 60
-
-// HistoryLimit is the maximum number of entries saved in the scrollback history.
-const HistoryLimit = 1000
-
-// ReadHistory reads scrollback history from r. Returns the number of lines
-// read, and any read error (except io.EOF).
-func (s *State) ReadHistory(r io.Reader) (num int, err error) {
-	s.historyMutex.Lock()
-	defer s.historyMutex.Unlock()
-
-	in := bufio.NewReader(r)
-	num = 0
-	for {
-		line, part, err := in.ReadLine()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return num, err
-		}
-		if part {
-			return num, fmt.Errorf("line %d is too long", num+1)
-		}
-		if !utf8.Valid(line) {
-			return num, fmt.Errorf("invalid string at line %d", num+1)
-		}
-		num++
-		s.history = append(s.history, string(line))
-		if len(s.history) > HistoryLimit {
-			s.history = s.history[1:]
-		}
-	}
-	return num, nil
-}
-
-// WriteHistory writes scrollback history to w. Returns the number of lines
-// successfully written, and any write error.
-//
-// Unlike the rest of liner's API, WriteHistory is safe to call
-// from another goroutine while Prompt is in progress.
-// This exception is to facilitate the saving of the history buffer
-// during an unexpected exit (for example, due to Ctrl-C being invoked)
-func (s *State) WriteHistory(w io.Writer) (num int, err error) {
-	s.historyMutex.RLock()
-	defer s.historyMutex.RUnlock()
-
-	for _, item := range s.history {
-		_, err := fmt.Fprintln(w, item)
-		if err != nil {
-			return num, err
-		}
-		num++
-	}
-	return num, nil
-}
-
-// AppendHistory appends an entry to the scrollback history. AppendHistory
-// should be called iff Prompt returns a valid command.
-func (s *State) AppendHistory(item string) {
-	s.historyMutex.Lock()
-	defer s.historyMutex.Unlock()
-
-	if len(s.history) > 0 {
-		if item == s.history[len(s.history)-1] {
-			return
-		}
-	}
-	s.history = append(s.history, item)
-	if len(s.history) > HistoryLimit {
-		s.history = s.history[1:]
-	}
-}
-
-// Returns the history lines starting with prefix
-func (s *State) getHistoryByPrefix(prefix string) (ph []string) {
-	for _, h := range s.history {
-		if strings.HasPrefix(h, prefix) {
-			ph = append(ph, h)
-		}
-	}
-	return
-}
-
-// Returns the history lines matching the inteligent search
-func (s *State) getHistoryByPattern(pattern string) (ph []string, pos []int) {
-	if pattern == "" {
-		return
-	}
-	for _, h := range s.history {
-		if i := strings.Index(h, pattern); i >= 0 {
-			ph = append(ph, h)
-			pos = append(pos, i)
-		}
-	}
-	return
-}
-
-// Completer takes the currently edited line content at the left of the cursor
-// and returns a list of completion candidates.
-// If the line is "Hello, wo!!!" and the cursor is before the first '!', "Hello, wo" is passed
-// to the completer which may return {"Hello, world", "Hello, Word"} to have "Hello, world!!!".
-type Completer func(line string) []string
-
-// WordCompleter takes the currently edited line with the cursor position and
-// returns the completion candidates for the partial word to be completed.
-// If the line is "Hello, wo!!!" and the cursor is before the first '!', ("Hello, wo!!!", 9) is passed
-// to the completer which may returns ("Hello, ", {"world", "Word"}, "!!!") to have "Hello, world!!!".
-type WordCompleter func(line string, pos int) (head string, completions []string, tail string)
-
-// SetCompleter sets the completion function that Liner will call to
-// fetch completion candidates when the user presses tab.
-func (s *State) SetCompleter(f Completer) {
-	if f == nil {
-		s.completer = nil
-		return
-	}
-	s.completer = func(line string, pos int) (string, []string, string) {
-		return "", f(string([]rune(line)[:pos])), string([]rune(line)[pos:])
-	}
-}
-
-// SetWordCompleter sets the completion function that Liner will call to
-// fetch completion candidates when the user presses tab.
-func (s *State) SetWordCompleter(f WordCompleter) {
-	s.completer = f
-}
-
-// SetTabCompletionStyle sets the behvavior when the Tab key is pressed
-// for auto-completion.  TabCircular is the default behavior and cycles
-// through the list of candidates at the prompt.  TabPrints will print
-// the available completion candidates to the screen similar to BASH
-// and GNU Readline
-func (s *State) SetTabCompletionStyle(tabStyle TabStyle) {
-	s.tabStyle = tabStyle
-}
-
-// ModeApplier is the interface that wraps a representation of the terminal
-// mode. ApplyMode sets the terminal to this mode.
-type ModeApplier interface {
-	ApplyMode() error
-}
-
-// SetCtrlCAborts sets whether Prompt on a supported terminal will return an
-// ErrPromptAborted when Ctrl-C is pressed. The default is false (will not
-// return when Ctrl-C is pressed). Unsupported terminals typically raise SIGINT
-// (and Prompt does not return) regardless of the value passed to SetCtrlCAborts.
-func (s *State) SetCtrlCAborts(aborts bool) {
-	s.ctrlCAborts = aborts
-}
-
-// SetMultiLineMode sets whether line is auto-wrapped. The default is false (single line).
-func (s *State) SetMultiLineMode(mlmode bool) {
-	s.multiLineMode = mlmode
-}
-
-// ShouldRestart is passed the error generated by readNext and returns true if
-// the the read should be restarted or false if the error should be returned.
-type ShouldRestart func(err error) bool
-
-// SetShouldRestart sets the restart function that Liner will call to determine
-// whether to retry the call to, or return the error returned by, readNext.
-func (s *State) SetShouldRestart(f ShouldRestart) {
-	s.shouldRestart = f
-}
-
-func (s *State) promptUnsupported(p string) (string, error) {
-	if !s.inputRedirected || !s.terminalSupported {
-		fmt.Print(p)
-	}
-	linebuf, _, err := s.r.ReadLine()
-	if err != nil {
-		return "", err
-	}
-	return string(linebuf), nil
-}