Remove unneeded patch applied upstream.

Use a ffmpeg revision which suits our state of patches

Please leave the FFmpeg revision fixed and only update it if you sure that your newer one is stable, nice and cool.

Unsure about my sanity now though.

The attached patches fixed --disable-altivec for libswscale oO

This reverts commit 63b84d59.

Don't use old snapshots and think its HEAD

seems to work.

Removed nasm in favour of yasm for Darwin-x86. Note that yasm isn't build on PowerPC-based Macs because it's not needed.

Removed nasm from the contribs and changed the build behaviour for yasm: it's only compiled on Intel-based Macs as PPC-based Macs don't need it.

Don't use the export things in taglib as we don't need it and it's buggy

Also fix Distributions gitignore.

Must be reverted once x264 is fixed.

It doesn't work yet with mingw;

don't compile on Windows.

Looks like taglib authors don't support autotools build system now.