GLMixer Code

Fix bug in multithreaded folder view update

Added download for r955

Fix Win32 compilation (and bugs in Video File for pictures reading)

Optimize GUI Session Switcher by putting in a thread the fill in of the
list of sessions.

Fix CPU intensive loop.

Use codec UTF8 by default in String and translation.
(should support accents and non latin characters in path and messages).

Improved dialog for Memory policy

Implementation of user selection of memory usage policy for VideoFile.
GUI selection in user preference dialog and saving of glmixer
preferences of the memory usage policy, allowing to limit buffers into
the range [60MB - 500MB] for each video file.

Implementation of the maximum memory usage for buffers of a video file.
The MAX_VIDEO_PICTURE_QUEUE_SIZE is 480MB, MAX_PACKET_QUEUE_SIZE = 20MB.
The DEFAULT_MEMORY_USAGE_POLICY is to 50%, i.e. 250MB per video file.

fix compilation issue version libavcodec (av_frame_free)