gnu/153945: Update sort with 15 upstream patches

[pfg at FreeBSD.org]

Synopsis: Update sort with 15 upstream patches

State-Changed-From-To: open->closed
State-Changed-By: pfg
State-Changed-When: Sat Mar 17 02:31:39 UTC 2012
State-Changed-Why: 
On further review these and other updates should be done through
the vendor branch or else we will have an unsynced mess.

The good news is that a BSD replacement has been advancing.

http://www.freebsd.org/cgi/query-pr.cgi?pr=153945