Ftransc

+ disable support of functionality when its dependency is not installed.
this prevents crashes like trying to convert with an unavailable encoder.

+ Written in python, thus, 'ftransc' & 'fmetadata' merged.
+ added the 'extreme' quality preset.
+ added directory walking.
+ transcode via wav option removed.
+ added a feature to unlock prelocked files.

+ FLAC support: encode + decode + extract metadata + add metadata
+ polished logging.
+ polished code style
+ added the 'tiny' quality preset.

+ fmetadata python script.
+ decode to wav
+ trascode via wav and direct transcode
+ extract audio content from video files
+ added uninstallation option.
- removed asftags, asfedit and aactags
- removed dependency on mid3v2, id3 and vorbiscomment

+ Support for non-ASCII Unicode characters via UTF-8.
+ Installation via a Makefile.
+ Option to check dependencies.
+ Overwriting disabled by default, with option to enable.
+ If source and destination files are the same, do not proceed.

+ corrected man page installation path.