fxmoviemanager 5.1 发布，视频文件管理器

fxmoviemanager 5.1 发布。FxMovieManager 是一个视频文件的管理器。

变化：Internal clipboard management (Copy, Cut and Paste commands) was added to both fxmoviemanager and fxarchive. The video-size menu was modified to be more suitable for HD monitors. The support for using ffplay as an alternative player was improved. Memory comsumption for the video thumbnailer function was reduced. Minor bugs on the file properties dialog and play-table menu were fixed. Desktop icons are now automatically linked by the ./configure script. For the fxscanvirus utility the recursive functions that look for files to be scanned and for the progress bar were rewritten.