Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update for gperf 2.7

$Id$ -> $FreeBSD$

Revert $FreeBSD$ to $Id$

Use SRCDIR instead of PATH

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Same. This wasn't installed before either.

add bmakefiles