devel/gps: Restore missing project properties switches

The project properties were missing several tabs in the "switches"
sections, but it wasn't immediately obvious why.  It turns out that this
was caused by a missing generated file (gnat_switches.py).  Restoring
that file along with having PATH set to the Ada compiler restored the
missing tabs.

The trick is that the generated file needs a texi file that is not present
in the distfile.  The texi file was discarded by gnat_util (and its parent
gccX), so the solution is change gnat_util to install the file at its own
DOCDIR.  Pregeneration of the gnat_switches.py is a bad idea IMO, so we
stick with the intended generation.

while here, install gps as gps_exe and create a wrapper named "gps" that
will define ADA_PROJECT_PATH and a PATH component to the Ada compiler if
they aren't already defined.  GPS malfunctions a bit if it can't find the
compiler or standard library project files.  Using a wrapper is nice for
new users that don't realize environmental changes are needed.

I also changed the install scripts to use BSD_INSTALL_* macros which
eliminated the need to use the install-strip INSTALL_TARGET.

Finally -- it seems that the ADAXX trick to pull in gcc-aux's versioning
for the PORTREVISION stopped working recently although the PORTVERSION
still worked.  There's a new catch-22 where <pre> was needed to evaluate
USES=ada, but if <pre> is called, PORTREVISION value is frozen.  Failure
to use <pre> resulted in an inclusion failure.  The only fix available
was to recreate the ada.mk logic.  Since gnatdroid is still hardcoded to
gcc-aux, only gnat_util was affected (discovered when poudriere failed
to rebuild it).

1 files changed, 1 insertions, 2 deletions

diff --git a/lang/gcc-aux/Makefile.version b/lang/gcc-aux/Makefile.version
index de3ce8ba20cd..1bdd1a73dec5 100644
--- a/lang/gcc-aux/Makefile.version
+++ b/lang/gcc-aux/Makefile.version
@@ -5,8 +5,7 @@ GCC_POINT=		2
 GCC_VERSION=		${GCC_BRANCH}.${GCC_POINT}
 SNAPSHOT=		20141023
 MAIN_PR=		1
-UTIL_PR=		1
-ARMV5_PR=		0
+UTIL_PR=		2
 ARMV7_PR=		0
 
 # Snapshot naming pattern