osx/intf.m: don't show msg_err's in the OSX GUI anymore. Localised errors/warnings are shown by the interaction framework now.
wx/interaction.cpp: another WX compilation fix

    - intf_UserFatal takes an addition bool-argument now to set whether the error message will be blocking in the interface or not (so TRUE = blocking)
    - intf_UserWarn is always non-blocking and is used to check important, localised warnings to the user
* wx: a compilation fix, but no update to the current API
* osx: complete implementation of the interaction framework using some Carbon (!) functions, because the needed icons aren't accessible through Cocoa. Regrettably, I had to add yet another nib-file to keep the code clean and readable.

The Error-dialogue is no longer re-usable (so the specific ID was removed). The interface needs to keep track of the reported errors and warnings. Thus, it may discard them as requested by the user and doesn't need to care about the core.

Misc fprintf cleanup

   is not visible

   show only the windows that were visible before

- allow for libvlc_exception_t to be NULL in APIs
- remove X11 references from libvlc, as it breaks MacOS X

* Added the QuickTime RTSPtext redirect system. uses m3u, even though they are not related.
* Added the WM Server [Reference] redirects to the pls playlist demux. it's also INI based.

This fixes #690

- intf_UserProgress* takes an additional argument now. use it to provide the time to go (in sec) until the process will be finished. Provide 0, if you don't have such info. The interface will hide the respective text-field.
- intf_UserProgressIsCancelled can be called by the module which triggered the interaction dialogue on a regular interval, to check if the user cancelled the dialogue or not. This is for dialogues with an optional cancel-button only (like the modal progress panel), so it doesn't replace p_dialog->i_return = DIALOG_CANCELLED which is for yes/no-style dialogues
- intf_UserOkayCancel was removed in favour of an enhanced intf_UserYesNo
- intf_UserYesNo takes 3 additional arguments now to get the custom captions of the default (~Yes), alternate(~No) and one optional button(~Cancel). This provides a better interface experience for the user and is more compliant with OSX's HIGL. The interface automatically hides the 3rd button, if NULL is given.

if (vout_Control VOUT_REPARENT is called giving a Drawable in args)
then 
     that Drawable is used as new parent
otherwise
     DefaultRootWindow will be the parent
     

+ some misc test cleanup

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