cmake HAVE_EARTHQUAKE examples

skyjake/Doomsday-Engine doomsday/libs/gamekit/libs/heretic/CMakeLists.txt :10

add_definitions (
    -D__JHERETIC__=1
    -DLIBDOOMSDAY_CUSTOM_MOBJ=1
    -DHAVE_EARTHQUAKE=1
)

skyjake/Doomsday-Engine doomsday/libs/gamekit/libs/hexen/CMakeLists.txt :10

add_definitions (
    -D__JHEXEN__=1
    -DLIBDOOMSDAY_CUSTOM_MOBJ=1
    -DHAVE_EARTHQUAKE=1
)