allow SDL 1.2 to at least do a 32767 map. We probably should add a TryDo somewhere to assert that limit on SDL 1.2 to avoid overflows. Ditto int version for SDL 2
Added tag 0.9.20-release for
changeset af0520a6bf00
switch every optimization from Os to O2
Also move 'disable optimizations' in the internal pascal file for debug mode.
missed this in the merge. rejected the uGearsHandlersMess changes thinking they were all desyncing, but there was the function rename from uLandGraphics