Merge pull request #2106 from vpeter4/liveusb

oeinstaller: boot menu (Installer + Live)
tools: add updated create_installstick.exe
create_installstick: rename to create_livestick.exe
eglibc: add gai.conf and enable support to prefer ipv4 over ipv6

Signed-off-by: Stephan Raue <stephan@openelec.tv>
atv: xorg.conf improvements

changes:

a) nvidia-auto-select can detect presence of TV-0 or DFP-0, but without TVStandard the TV-0 modepool does not contain 1080i or 720p modes and users probably see a black screen. TVStandard is ignored if DFP-0: is the active device

b) removing the extension section and Composite="false" as this has not been supported for some time
scripts/git_version: fix script

Signed-off-by: Stephan Raue <stephan@openelec.tv>