[Midnightbsd-cvs] src: /src: Update build environment to support llvm + clang, remove

[laffer1 at midnightbsd.org]

Log Message:
-----------
Update build environment to support llvm + clang, remove choice on threading library.. we're only going to use libthr now. Try to fix cross builds.  This will still fail on perl at the moment.

Modified Files:
--------------
    src:
        Makefile (r1.12 -> r1.13)
        (http://cvsweb.midnightbsd.org/src/Makefile?r1=1.12&r2=1.13)
        Makefile.inc1 (r1.42 -> r1.43)
        (http://cvsweb.midnightbsd.org/src/Makefile.inc1?r1=1.42&r2=1.43)