Add Randy's Candy_v1 as an upgrade to the Cake theme, add Cake theme to list of selectable themes. Also add forgotten Hoggywood CMakeLists.txt.
foreach(dir "Fonts" "Forts" "Graphics" "Locale" "Maps" "Music" "Sounds" "Themes" "Missions" "Names" "misc" "Scripts")
add_subdirectory(${dir})
endforeach(dir)
if(${GL2})
add_subdirectory(Shaders)
endif(${GL2})