New USES imake to handle the dependency on imake.

This uses accept 'env' as an argument for ports that do use their own or a different do-configure target.

Modify xmkmf so it accept IMAKECPPFLAGS as default flags for imake and pass it to the called imake.
Modify xorg-cf-files (the FreeBSD.cf configuration file) to allow CppCmd to be overwritten.
Pass CppCmd CcCmd and CplusplusCmd via command line to each call of imake via IMAKECPPFLAGS
Pass IMAKE_DEFINE with the above arguments to MAKE_ARGS so that imake spawned from Makefile generated by a previous
imake also inherit the defined CppCmd CcCmd and CplusplusCmd.
Make imake use devel/tradcpp all the time, so that when buidling with clang we do not depend on gcc's cpp.
Make imake respect CC and CXX
Make imake respect USE_GCC (if set imake will use gcc's cpp).

While here:
- Remove a couple of indefinite articles from comments
- Trim headers
- Fix a couple of ports to build with clang or use: USE_GCC=any
- Fix a now useless redefinition of the extraction chain
- Fix a typo in japanese/Wnn7-lib bundled imake template definitions
- Fix some XMKMF execution with no env specified
- Use options helper in x11/xautolock to simplify the port

1 files changed, 12 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index 0d5f278d790c..4ec8b81169aa 100644
--- a/CHANGES
+++ b/CHANGES
@@ -10,6 +10,18 @@ in the release notes and/or placed into UPDATING.
 
 All ports committers are allowed to commit to this file.
 
+20130628:
+AUTHOR: bapt@FreeBSD.org
+
+ * New USES: imake
+
+ This uses replaces USE_IMAKE, it handles dependency on imake. Its only argument
+ is 'env', which prevent from defining the do-configure target.
+
+ * New LATE_INSTALL_TARGET
+
+ This content of this new macro is appended to INSTALL_TARGET
+
 20130620:
 AUTHOR: bapt@FreeBSD.org