POTFILES.in: some new files, some ones renamed

* Qt4 - Simple Preferences: Start to bind the keys to the preferences. Lots of them still don't work. Why ?

if I actually look at the result

- Make UDP-Lite an option rather than a distinct shortcut

  P.S. this bug was present for 3 months, without anyone noticing it. That's just BAD people.

This will be parsed as an address counter on the receiver,
with disastrous consequences

Force a TTL value of 1 if not defined instead of refusing to start.
(Any suggestion about a better failsafe value ?)

Fixed prepend of SPS/PPS per I frame.

* update vlc_symbols.h

courmisch, can you please check ?

- libvlc: make sure that p_static_libvlc always point to the first libvlc instance (actually, is it still used ?)

- libvlc control: uninitialiazed mutex and variables, was prevent browser plugins from adding elements in playlist

 from the httpd callback in its own thread)

Fixed race condition with sout-keep.
Fixed broken sout-keep behaviour (currently active sout can be used
 twice or destroyed..., it might fixed segfaults reported by xxcv))

(Avoid a possible race condition)

Improved TAB_* protection and added TAB_INIT/CLEAN.

-activex: implement _NewEnum property on log.messages collection to allow for "For each message in log.messages" construct in VB and other languages

it was merely a slower (and buggier) recv() nowadays.

- Minor optimization for POLLHUP case

Qt4 : SimplePrefs: various fixes, remove some widgets, uniformity, cleaning and hiding for Win32/others for some options.