Avidemux 2.6.4

* Switched to mxe-octave for win32 build, that fixes most of the crashes on win32
* Better compatibility with AAC in mpeg TS
* Translations re-enabled
* Fixed a bug in x264 which could make encoding abort right at the beginning
* Fixed msharpen when width was not a multiple of 8
* Added camtasia codec support
* Fixed VC1 in TS indexing
* Properly clear things when loading a new video
* Report proper audio duration for mpeg PS/TS
* Report proper audio duration for mpeg PS/TS
* Ass/ssa filter re-enabled