Author: Philip Tricca <philip.b.tricca(a)intel.com>
Date: 2017-08-31 (Thu, 31 Aug 2017)
configure: Check for md2man-roff.
md2man-roff is required for the build to succeed. If it's missing
this commit will cause the configure script to fail with a helpful
Signed-off-by: Philip Tricca <philip.b.tricca(a)intel.com>