Do not build gold if compiler is clang version lower to 3.4

Reported by:	many
avr-binutils patch has to be updated for binutils 2.25
Unbreak
Backport changes from emulators/i386-wine-devel to emulators/i386-wine.

Changes:
 - Fix install conflicts [1] (for the "newly" added compholio port)
 - nvidia.sh: Gracefully handle a corrupt nVidia tarball
 - nvidia.sh: Provide checksum and size information for nVidia tarball
 - Reduce diff between i386-wine and i386-wine-devel:
   - Add support for sub-ports (unused by this port)
   - Properly detect linked (and dlopen) libraries
   - binbounce: Properly set LD_(32_)?LIBRARY_PATH_RPATH variables
   - nvidia.sh: Add detection for i386-wine-compholio
 - Bump master port [1] due to changes to binbounce, nvidia.sh and shared
   library handling.

Approved by:    gerald@ [1]
Back out bapt's "cleanup" commit r371953.

This causes directory permissions to change, and if installation happens
without scripts, installing the new package causes mailman to become
defunct until bin/check_perms is run manually.

Most directories need to have group mailman (or whatever is configured)
and mode 02775, with exception of the archive/private.

More cleanups to follow later.

Submitted by:	flo@