and add callbacks if they already exist

Split out callback routines. 
Some cleanup. Still largely broken though. 

mtime.h: define constant for second-to-millisecond conversions.

po/*: updated the po-files
THANKS: updated my mail-address

vlc_meta.h: added CD-Text, ISO 9660, and CDDB fields. Separate email
will be sent about this.

Note: sound may be off by 2 seconds (150 sectors or pregap
amount). The sound for both this and the other cdda plugin don't work
for me. Before the last SVN update though that's what it sounded like.

  of linuxtv drivers. We currently only descramble one channel (this will
  change in the near future). Also fixed a few demux-related bugs.

* modules/gui/wxwindows/video.cpp: before resizing the interface when a video stops, wait a bit just to make sure a new video outut is not being spawned.

* fix the ebml and matroska downloads. added toolame target, but not enabled, since toolame is worse than ffmpeg when it comes to makefiles... ("it needs sam power").

Added "is_playing", "get_title", "get_time" and "get_length" to get computer-readable output (for third-party programs)

   if we need blending & rendering modules (fixes text messages which
   were missing sometimes)

* modules/mux/asf.c: MUX_GET_ADD_STREAM_WAIT == true. Seems even asfh can't send new headers after the stream started.