Remove '.include <src.opts.mk>' lines

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Fix Clang Makefiles 'MK_' to 'NO_' defined-type options

DragonFlyBSD uses !defined(NO_FOO) over the 'src.opts.mk'
'${MK_FOO}' style build-time options.

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Hookup Clang/LLVM+Runtime into build system

This is still a Work-in-Progress patch.

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>