K 10
svn:author
V 3
mat
K 8
svn:date
V 27
2016-09-05T11:34:07.096261Z
K 7
svn:log
V 190
Document GH_SUBDIR.

While there, add an example on how to do work with git submodules.

Reviewed by:	wblock
Sponsored by:	Absolight
Differential Revision:	https://reviews.freebsd.org/D7661

END