CSS is not yet disabled as it is hidden from us by libdvdnav/libdvdplay

- boostrap: make configure.ac happy when detecting contribs build on Cygwin
- Makefile: cleanup, fixed extraction of files containing invalid characters (on DOS LFN), gpg-error compiling

    .pc hqve been fixed upstream
    delete empty win32 patch
    temporarly disable install patch. it works fine without on debian and macOSX. FC4 to be investigated

   possible to load a skin on Windows when logged with an account containing
   non-english characters.

Forward port of revision 16113. Fixes a bug in live555 module, that made audio packets (only for audio types that are not supported) being sent to the video decoder. This caused artefacts and segmentation faults in the decoder. VLC core handles the case for codec being not supported just fine, so removed the check for undefined codec.

add --snapshot-prefix and --snapshot-sequential options. --snapshot-prefix lets you choose the filename's prefix (default it "vlcsnap-"). --snapshot-sequential numbers the snapshot starting with 1 and incrementing every time.

* another patch for ffmpeg, so make up a new ffmpeg patch-file and ditch the previous configure-specific one

It would be nice if someone with more x264-knowledge could review this.

* yet another patch for ffmpeg: its configure script doesn't recognise that (at least on OSX) variables' names are case-sensitive