FREETYPE_INCLUDE_DIR_freetype2.
The error case was that during first cmake run (unspecified
ACTUAL_3RDPARTY_DIR) FindFreeType set these to xxx-NOTFOUND. After
specifying ACTUAL_3RDPARTY_DIR, Find3rdPartyDependencies warn't able
to change these (without FORCE).
I also added freetype237 to the library search list since it is what's
in my binary dependencies for vc90"