Changeset [a2b6585c0dd036c75044c540c0127b50e7eabe49] by Antoine Mercadal

CPSound support play while loading

This patch allow to send 'play' message before
the sound is actually loaded (by remembering the play request
and playing the sound when loaded if needed)

this allow to do:

`objj var sound = [[CPSound alloc] initWithContentsOfURL:aSoundURL byReference:NO]; [sound play];` https://github.com/280north/cappuccino/commit/a2b6585c0dd036c75044c...