Deal with PPC jmpbuf
Deal with PPC jmpbuf

Also, fail on compile if we don't recognize the architecture.
This passes the basic unit tests, but not anything that uses reset or exceptions.

Change-Id: I544c89111dc16f731147a7e4c237d968a787ea08
Reviewed-on: https://gerrit.dechocorp.com/6907
Reviewed-by: BJ Homer <9d87885f7c1ddf6a47c97747a5d80f2b14fd12c0@decho.com>

mtanski/mordor,ccutrer/mordor,mtanski/mordor,adfin/mordor,mozy/mordor,adfin/mordor,cgaebel/mordor,ccutrer/mordor,mozy/mordor,mtanski/mordor,mozy/mordor,adfin/mordor,ccutrer/mordor,cgaebel/mordor