Added facilities for embedding game patches into nancy.dat
Added two game patches for nancy2:
- one of the original patches, as distributed by the original
devs. Specifically, only the patch to extend the end-game
timer; there exists another patch that fixes an error when
double-clicking a specific cupboard, but that's caused by
an engine bug that does not exist in ScummVM.
- a new, custom patch that fixes a nasty softlock caused
by incorrect dependencies in a certain scene.
