[package] [mediacenter-osmc] don't need to disable crystalhd on rbp
[scripts] [common] don't probe download url if already defined in session. fix syntax error
[package] [mediacenter-osmc] add -O3 back in with CFLAGS for RBP
[package] [mediacenter-osmc] add -O3 for appletv as well
[package] [libafpclient-osmc] fix include header path and bump version