- Removed deprecated function call to avcodec_alloc_frame (is now av_frame_alloc()
- Removed unused function in dancegraph (time2a)
Update POT.
Update translation_wiki_helper.sh for GitHub.

GitHub's wiki doesn't support color in table cells, so maybe we should
host that table somewhere else?
Restore time2a, it is still used.
Use av_frame_free for av_frame_alloc.

See http://stackoverflow.com/a/17404688 for why that code now looks like
it looks. This works with GCC, but needs to be tested against other
C++11 compilers to make sure the lambda works.
Compatibility for older version of ffmpeg/libav.

av_frame_alloc/av_frame_free is new in ffmpeg 2.0/libav 10. Add some
compatibility for older releases.
Polish translation update.
OSX Version bump
Merge remote-tracking branch 'origin/master'
Dutch translation update
Merge pull request #117 from bcmpinc/master

Dutch translation update
Remove no-longer used files.
Update OSX build-script.

Small changes, enable tools by default, as well as checking whether they were actually built in order to fix their dependencies.
periodic Merge branch 'master' of https://github.com/performous/performous into webserver

Conflicts:
	game/ffmpeg.cc
	lang/nl.po
fixed merge conflicts (didn't push last commit before fixing so nobody's hurt)