samba: update to samba-3.6.24

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gettext: build 'gettext-tools' only for host build

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gettext: add patch to dont build docs and examples

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