linux: remove patch from todo dir

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gettext: update to gettext-0.19.3

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libxml2: update to libxml2-2.9.2

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