new package: add package 'makemkv-oss'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libbluray: make AACS support optional, add support to choose between 'libaacs' and 'makemkv-oss' as aacs solution, set default to 'makemkv-oss'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
eglibc: gai.conf: adjust scope table
eglibc: install 'getent'