misc/187838: Add support for "mtree" to populate_data_slice and cust_install_files, unify variable names.

[lev at FreeBSD.org]

Synopsis: Add support for "mtree" to populate_data_slice and cust_install_files, unify variable names.

Responsible-Changed-From-To: freebsd-bugs->imp
Responsible-Changed-By: lev
Responsible-Changed-When: Sat Mar 22 11:28:25 UTC 2014
Responsible-Changed-Why: 

  According to src/MAINTAINERS 


http://www.freebsd.org/cgi/query-pr.cgi?pr=187838