Add with-ffmpeg-{vorbis,theora,ogg} in case ffmpeg is compiled with vorbis, theora and/or ogg support

- the actual download is currently done by your default browser since the needed notification window isn't available on OSX yet
    - download through VLC is implemented, but commented for the moment
- needs some checking once a complete Status.xml is available

image.c: ImageReadUrl now tries to open the image using the stream functions if fopen failed. (Which means that it can now read images on the web)

(we don't seem to be). ${LIBINTL} is normally not defined when there is
no libintl anyway - should fix FreeBSD libintl linking issue

method. It's still quite simple ... loads of room for improvement.
Example available here: http://people.videolan.org/~dionoea/bluescreen.mpg

* mosaic.h: remove trailing space

  This might explain the audio-core crashes we have seen in the past on Mac OS X 
* Fix issues with platforms which don't have alloca() (defined)

loops through these. The syntax is <file>[,[<delay in ms>][,[<alpha>]]][;...]
Idea (and some parts of the code) by markfm

Note:
The vout-filter segfaults upon destruction but i don't understand why...
could someone have a look ?

(rather than 50 + 2)

Thanks to Timothy Lee < timothy d0t lee @t siriushk d0t c0m > for the patch.

    back to the upstream authors so far.

    this patch, I committed it upstream instead.

* added a button to create an empty node at the top level of the playlist. Thanks to zorglub for a hint once again :) (closes #449)