Update to the 20141015 snapshot of GCC 4.9.2.
devel/p5-Test-Net-RabbitMQ: update to 0.10
devel/rubygem-nprogress-rails: update to 0.1.6.3
- Update to 0.5.9
- Add diff to remove ldconfig, which is GNU/Linux compatible
- Add diff to explicitly check for threaded Boehm GC to avoid breaking when
  both threaded, and non-threaded versions are installed
- Mark port as deprecated, and give one month's notice for expiration
- Update to version 1.16.0

This version provides
  * additional and improved effects
  * high- and band-pass EFX filters
  * improved resampling support
  * improved audio back-end support
  * a GUI configuration utility (based on QT)
  * and lots of other features: http://kcat.strangesoft.net/openal.html
- Convert ports from audio/ to new USES=python

Reviewed by:	portmgr (implicit)
- Convert ports from benchmarks/ and biology/ to new USES=python

Approved by:	portmgr (implicit)
- Convert ports from cad/, chinese/, comms/ and converters/ to new
  USES=python

Approved by:	portmgr (implicit)