bin/163567: make(1) forgets to chdir back to the original directory after finding an object dir

[eadler at FreeBSD.org]

Synopsis: make(1) forgets to chdir back to the original directory after finding an object dir

Responsible-Changed-From-To: freebsd-bugs->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Sat Dec 24 02:33:16 UTC 2011
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=163567