* ALL: internationalized all configuration strings.
  * ./src/interface/main.c: we now set LC_CTYPE to get the right charset.
  * ./src/misc/configuration.c: lots of simplifications in the code.
  * ./po/vlc/pot: updated translations.

  * Removed unused code (intf_channels.c, keystrokes.h).
  * Put common_win32.h back into common.h -- it wasn't that big and we
    should not multiply header files.
  * Added gettext support by Thomas Graf <reeler@reeler.org>, may be
    broken on other platforms but we'll only see it when I'm finished
    with vout 4 :-)
  * Fixed a segfault on exit when no fast_memcpy module was found.