- Fix const warnings
- Remove dead code

Fixes detection when using mingw

larger than the mtu in rtp mode

Removes a fucking UTF-8 character that looks like a space, smells like a space, but is far from being a space

* modules/video_output/directx/direct3d.c: add experimental support for I422 (RGB conversion is very CPU intensive).

Fixes one, but not all of valgrinds warnings relating to this

Hopefully fixed a issue with the generated avi file in the same go

    http://forum.videolan.org/viewtopic.php?t=27848
* Fix a few compiler warnings.

- Re-fix directory handling

Fix libgcrypt compil under cygwin. It doesn't have gettimeoftheday() and it's wongly detected, so force it. (from markfm 's debugging and googling)

Some sanity checks