This branch is an attempt to add x265 (HEVC) support to avidemux.

In order to accomplish this, I am working on the following tasks:
* Porting the x264 plugin and GUI to support x265 (20% done)
* Migrating avidemux to ffmpeg 1.x to 2.x for x265 support (20% done)

Note that this solution does not currently build,
as I am working to resolve some issues with VDPAU.

The avidemux_core project; however, will build and can be considered a milestone.
Removing ffmpeg 1.2.7 as it is no longer used.
Adding includes for buffer.h, frame.h, and macros.h from libavutil to
resolve a few build issues.
Fixing vdpau.h patch as it is required to build.
Fixing a build error in the vdpau header file.

The avidemux/qt4 package can now build successfully! Another milestone.
Merge branch 'master' of https://github.com/KoolAidPitcher/avidemux2