Log Message:
Update scrotwm to 0.9.22 snapshot version.
Changes since last version are unknown.

pkgsrc changes:
 * Update HOMEPAGE and MASTER_SITES to new location.
 * Add dependency on x11/dmenu, using for menus
 * Honor package supplied Makefiles, fixes PR#42790.

Build and run tested with NetBSD-i386-5.0.2 with modular X, and
build tested with OpenBSD-i386-4.6 (not tested with Darwin).