fixed: multiple language sami subtitles broken with commit ea87f7e8 (2)

refactored the git version extraction code to be shared between the update_git_rev.bat and BuildSetup.bat scripts.

NASM is useful only on x86 architecture. There it should be listed which architectures are supported by NASM and which are not.

Based on patch by Koen Kooi [1].

[1] http://cgit.openembedded.org/cgit.cgi/openembedded/commit/recipes/xbmc/xbmc/0001-Only-check-for-nasm-on-i686-it-is-bogus-on-ARM-which.patch?id=0cc02ded7bd429208ccb0e0e0aa3e43aec8a4722



Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Koen Kooi <koen@openembedded.org>
Closes: Trac ticket #11020

Remove unused functions and member variables from CKeyboardStat.cpp. Remove unnecessary Reset, ResetState and GetKey functions and calls to them. Remove unused ProcessKeyboard function from CApplication.

added: gpu memory information in the log using GL_NVX_gpu_memory_info (when available), this might provide useful information when VDPAU is failing

parse extradata field populated by FFMpeg and set subpicture screen size information accordingly (ticket #11006)

(slightly edited by CrystalP in merge)

usage:
- xbmc.Player().getAvailableAudioStreams() returns a language list of all available audio streams for the currently playing movie. e.g ['Italian', 'English', 'German']

- xbmc.Player().setAudioStream(1) sets Audio stream to 'English'

fix missing include in xbmc/lib/cmyth/librefmem/Makefile. thanks sitzm for reporting it. closed #11049

added: multiple selection support in the python filebrowser dialog. see the pydocs for details, ticket #10894, thanks to fellbeast

added: support for multi-file selections in the file browser. part of ticket #10894 (some cosmetic changes by me) - thanks to fellbeast

changed: allow logging off, even if the login screen is not enable. this changes the meaning of 'enable login screen' to 'enable login screen on initial startup'. credit bruing (small mod my me), ticket #10708