2.0.2: Intergrated channel-exp branch:

2.0.2: Intergrated channel-exp branch:
          - ffmpeg_producer: Fixed problems with SEEK, LENGTH and nb_frames.
          - image_consumer: Fixed potential access-violation.
          - image_shader: Initialize shaders during startup instead of first frame.
          - audio_mixer: Fixed incorrect audio mixing.
          - oal_consumer: Fixed incorrect buffering of frames, which caused out of sync when running only audio and screen consumers in a channel.
          - amcp: Fixed CG INFO.
          - decklink_producer: Disable audio for NTSC, due to improper handling of NTSC the decklink producers' frame muxer could overflow video frames.
          - ogl_device: Print version during ogl startup instead of in main.
          - FlashAxContainer: Print OnDebug calls.
          - main: Print configuration xml to log.
          - channel: Improved pipeline frame handling. SET MODE no longer does heavy re-initialization of mixer and runs ogl_device gc to recover memory.
          - flash_producer: Added support for returning strings through param.
          - output: Automatically handles buffer-depth, instead of error-prone manual configuration.
          - configuration: Simplified syntax.
          - write_frame: Optimized frame allocations.
          - frame_muxer: Added support for NTSC DV.

git-svn-id: https://casparcg.svn.sourceforge.net/svnroot/casparcg/server/branches/2.0.2@1604 362d55ac-95cf-4e76-9f9a-cbaa9c17b72d