Commit 9d8b0ad introduces the copy_prefs function, and uses it to replace prefs
= default_prefs. We need to include subsurfacestartup.h for it to work in
testplan.cpp, otherwise TestPlan_build fails.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>