This adds copyright/license notification blocks CMake's non-find
modules. Most of the modules had no notices at all. Some had notices
referring to the BSD license already. This commit normalizes existing
notices and adds missing notices.
STYLE: this file is mostly uppercase commands, so make all commands
uppercase
ENH: add a status message in case pkgconfig didn't find the package (sync
with the one from KDE)
Alex
Brad King
Bill Hoffman
Alexander Neundorf
Ken Martin