Add a custom build of mkbundle working for mingw

see: https://github.com/mono/mono/pull/1288
mono-windows: install all devel files to link dynamically to mono
longomatch: fix build with newer mkbundle
Remove debugging trace
gtk-sharp: remove unused dll config files in windows
longomatch: tweek a bit more windows packaging
longomatch: do not include all the plugins folder
Rename LongoMatchGtk.exe to LongoMatch.exe
Add a new package for GStreamer plugins with patents issues
Move package file
Add ffmpeg plugin to the longomatch plugin
Create a pkg for longomatch and set install dirs
Update packages icons
Install gst plugins in the common directory
nant: use the correct exception name
mono-windows: fallback to path without arch and error out if not installed
gtk-sharp: add also a fallback without x86 in the path
Enable back the 0.20 in this branch
Bump version and set version_mayor
Remove the gst plugins recipe/package from this branch