FT: PC demo bugfixes
PC FT demo didn't work well with current scummvm. It crashed right after beginning video sequence with complains about wrong script number.
This patch fixes it. Also further work showed that INSANE is different in the demo, so there is just minor fix for it that it doesn't crash.
There are many graphics glitches like: o Actors' animation often goes in wrong direction o Some video sequences do not play. There is sound but no picture o It crashed at the final sequence with random illegal opcode. But it is still possible to skip it with pressing ESC o After demo is looped LA logo is shown in wrong position
This patch relies on that assuption that Ender will rename Mac demo to ftmacdemo as it was discussed on IRC.
I will work at demo issues later after my next big patch will be finished.
Ticket imported from: #839741. Ticket imported from: patches/401.