util.c: Partially revert [12120]. the http interface (control=add) just take one mrl qnd the first " :" starts the options. closes #420

* extras/contrib/src/Makefile, extras/contrib/src/Patches/libpng-1.2.5-win32.patch: more cygwin fixes.

* extras/contrib/bootstrap, extras/contrib/src/Makefile: more cleanup + should mostly work on cygwin now.

* extras/contrib/bootstrap, extras/contrib/src/Makefile: cleanup (hopefully without breaking anything).

(otherwise e.g. MPEG2 video is mistetected as MPEG-PS)

"This patch adds some missing x264 options, namely: me, merange, no-psnr,
no-b-adapt, b-bias.  The names and expected values are exactly the same
as for the x264 commandline encoder."

as large as +/- 25 msec and too frequent audio up/down sampling

 the window (fixed the bug of the disappearing slider)

* Fix 2 gcc4 / SDK issues in glib
* fixes for libogg, libvorbis and libtheora to make sure LDFLAGS isn't (doubled up) by it's LDFLAGS_save. Issue reported and fixed upstream as well.

Note the patches are not all enabled yet, since my contrib Makefile is quite "edited" atm due to SDK work

 of the slider background was proportional to the scaling factor,
 which is not what we want!)

   instead of $T

   font, and not always 12...

    - alignment: possible values are left/right/center (left is the default)
         The right and center alignments are computed using the width of the
         control (as given by the "width" attribute).
    - scrolling: possible values are auto/manual/none (auto is the default)
       * auto: same behaviour as before, the text automatically starts
         scrolling if it doesn't fit in the width of the control. The user can
         still drag it manually.
       * manual: only manual scrolling is possible
       * none: no scrolling possible

libvlc.c: VLC_IsPlaying(), use playlist_IsPlaying() as last resort