ports/171688: [bsd.port.mk / bsd.sites.mk] Allow WRKSRC to be overridden when using USE_GITHUB

[edwin at FreeBSD.org]

Synopsis: [bsd.port.mk / bsd.sites.mk] Allow WRKSRC to be overridden when using USE_GITHUB

Responsible-Changed-From-To: freebsd-ports-bugs->portmgr
Responsible-Changed-By: edwin
Responsible-Changed-When: Sun Sep 16 17:10:26 UTC 2012
Responsible-Changed-Why: 
bsd.port.mk is portmgr territory (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=171688