- Do not send TTL with IN IP6

* added 2 boxes to the wizard to allow access to sout-transcode-soverlay with the GUI. needs further testing, but can't break anything. Additionally, the wizard's nib got converted to the diff-able xml-like format. refs #1005

* back-port a fix, which allows sleeping or showing the screensaver when a video is paused [18565] and originally solved #963

* back-port Pierre d'Herbemont's patch to prioritize Cocoa menu short-cuts against VLC's native hotkeys [18766]

* back-port Pierre d'Herbemont's patch to animate vout-window resizing [18882]. the nib file was manually adapted by myself as the patch failed. I hope that I got everything. It works right now :)

* don't double free an object! Thanks to nivix for pointing me to the right direction and keeping to bug me about this. Fixes #978

* publish gvp support to launch-services (this was enabled in /trunk a long time ago, but forgotten to be back-ported to 0.8.6)

* download the SDL stuff from sourceforge instead of the bogus official server, as the SF park is much faster and more reliable

    - this allows native compilation on future darwin and current win32 releases
    - more recent library version (0.3.9 instead of 0.3.8)
    - [18618], [18552], [18530], [18525], [18524] (partially)

I am very suspicious about the original commit to trunk by the way
(Why is signed int wrong in one place and right in the others?
 Could be, but really looks unlikely to me)