* Don't skip SPS/PPS after all. Apparently there is sometimes proper data behind such a NAL, which makes this break. Unfortunately there doesn't seem to be a way to properly skip data in the mp4 mux.

* modules/gui/wxwindows/menus.cpp: avoid using the C++ STL. This gets rid of weird crashes in the vector template.

* Improve the h264 rtp muxing even more. Should now be able to handle multiple h264 units in one block_t

+ temporarily re-enable vout-filter until video-filter is updated

I include this so that it can get some testing and debugging, but it has some issues:
* Several coding style / indentation problems that make the code quite hard to read
* Use of config_Get/config_Put instead of vars
* In my tests, it crashes as soon as bz-length is not == 0, which basically makes the attenuation effect inoperant

* src/misc/modules.c: only set b_force when we have b_strict.
* src/input/demux.c: add m4v and h264 extensions.

- use nearest integer value from integer division (i.e. round() ) in volume and time calculation, looks more accurate that way.

- Optimized clipping, removed the extra child window which prevented some buggy Intel DirectX drivers to render (can't handle too many sub-windows ?). Resizing looks smoother on IE, needs a lot of compatiblity checks on other apps such as VB, Delphi, etc...
- Fixed initial volume setting