Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
Merge bmake-20130730Main feature of interest is .MAKE.JOB.PREFIX=to suppress --- job --- tokens.
Update to bmake-20130330
Merge bmake-20120831 from vendor/NetBSD/bmake/dist.Provenance: ftp://ftp.netbsd.org/pub/NetBSD/misc/sjg
Import the 6-May-2012 release of the "Portable" BSD make tool (from NetBSD).Submitted by: sjg@juniper.net