Here it only gets used for non-Windows and non-Linux. It will current defaults
to using these "internal" headers like we do for xrender and friends.

Configure fails on mdds/mixed_type_matrix.hpp test when testing external
mdds otherwise.

Conflicts:
	configure.in
	scp2/source/extensions/directory_extensions.scp
	scp2/source/extensions/module_extensions.scp
	scp2/source/ooo/file_ooo.scp
	set_soenv.in
	solenv/bin/modules/installer/download.pm
	solenv/bin/modules/installer/helppack.pm
	solenv/bin/modules/installer/windows/createfolder.pm
	solenv/bin/modules/installer/worker.pm
	solenv/bin/ooinstall

these are the 3 files shared between all help localizations