Avoid need for AppleObjCRuntime on FreeBSD

Since it is unlikely to provide much value to us, just #if 0 it away

Sponsored by:	DARPA, AFRL
There is no Python in the FreeBSD base system
Update paths for FreeBSD build infrastructure

This same change was applied upstream in a later verison.
Remove LLDB platform support not currently of interest to us
Update build for LLDB snapshot at upstream rev 216948

Sponsored by:	DARPA, AFRL