JANITORIAL: Add [Debug|Release][32|64] to .gitignore

MSVC11 seems to be using these as new default when running on x64.
NEVERHOOD: Fix scene entrance when restoring in the Aqua (music) house

This looks to be a logic error in the constructor of module 2400, since
all the other modules do not create scenes with the global entrance
number when they are instantiated without an entrance (i.e. when
loading). With that logic error, all the code that handled Kleymen's
entrance to a scene after restoring was incorrectly skipped
NEVERHOOD: Fix graphics glitch when opening the menu
NEVERHOOD: Add missing music when entering the Hall of Records building

The "Everybody Way Oh" theme should be played in both of the first two
rooms of the Hall of Records building
NEVERHOOD: Remove superfluous description from a console command
NEVERHOOD: Use the ScummVM dialogs for saving/loading

An option has been added to use the original ones, if needed
NEVERHOOD: Fix incorrect checks for the waterfall sounds

Some of the "wall broken" checks were inverse, resulting in the waterfall
sound being incorrectly heard when the wall was broken. Also,
simplified some of the "wall broken" checks
NEVERHOOD: Handle invalid save_slot more gracefully on startup

If the specificed savegame doesn't exist, start the game from the
beginning. Before, it would just hang. The error handling is still
quite primitive, though.