[c12460] Update git_id for Cataclysm
[c12461] use the absolut path for CMAKE_INSTALL_PREFIX

Before this commit, building with a relative ${PREFIX} would cause the
build to fail.

(based on commit [12352] - b6bdff7)
[c12462] New CMaNGOS icon

More info http://cmangos.net/thread-23.html

(based on commit [12353] - 84ba04e)
[c12463] Fix logic mistake in loading respawn times. Thx to xfurry for pointing

(based on commit [12354] - 032f116)
[c12464] Some code cleanup

(based on commit [12355] - a5ecaff)
[c12465] Use default SQL storage for spell_script_target

(based on commit [12356] - b45bd1d)