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

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

remove one spurious WARNING tag from cmake message

merge from .20 again

improve OSX SDK selection when build and deploy target don't match

switch every optimization from Os to O2 Also move 'disable optimizations' in the internal pascal file for debug mode.