libdeng1: Cleanup
libdeng2: Copyright years update for skyjake
Moved api_material under the "resource" domain

Also fixed a typo in libdeng2.
Renamed jdoom, jheretic, jhexen, and libdeng source folders

They are now called "doom", "heretic", "hexen", and "libdeng1".
Mac OS X: Updated bundleapp.sh with new folder names
qmake|Mac OS X: Fixed a path to libdeng1