Makefile: more cygwin related fixes

DO NOT ADD IT AGAIN - YOU WERE WARNED!

Please test.

reported by Diego 'Flameeyes' Pettenò (gentoo.org)

* If anybody has the appropriate hardware, PLEASE test

(this is broken in 0.8.4, do we make a 0.8.4a for linux, along with the hal fixes ?)

   control of the playlist, in the small layout.

   resizeS or resizeE, in addition to the good old resizeSE.

* winamp2.xml: added preamp slider and fixed offsets

   - added the smaller version of the time slider used in some skins
   - made all the IDs unique

   in controls. The first valid one will be used. This is particularly useful
   for winamp skin, where you cannot know in advance the size of some images,
   so you can define 2 bitmaps, but only one control.

   A CtrlImage resized with the mosaic method didn't catch events outside of
   the initial (before resizing) size.

* Move jump size definitions to libvlc to avoid having 2 categories (still need to move bookmarks)
* Don't show bookmarks settings in GUI - speeds up dramatically config panel creation

   - Fix optarg parsing
   - Set ${libs} after the main loop to get the right exec prefix
   - Give -lvlc_pic if we want PIC
* Java bindings build 
   - Use vlc-config better
   - Use pic for building

Tweaked to integrate into build system

New --enable-python-bindings option
Pic libs will be built if something needing them (shared libvlc, python, mozilla) is built.
* Fix a description in vlcObject