OpenBOR v3.0 Build 6291

Just releasing the latest build with various updates and fixes from White Dragon.

OpenBOR v3.0 Build 6276

v6276

minor menu code improvement for sdl ports

OpenBOR v3.0 Build 6271

v6271

little wal deflect fix

OpenBOR v3.0 Build 6258

v6258

improved code  for default keyboard

OpenBOR v3.0 Build 6245

v6245

added missing SDL2_gfx headers into win-sdk

OpenBOR v3.0 Build 6240

v6240

update android version on manifest

OpenBOR v3.0 Build 6223

v6223

comment credits

OpenBOR v3.0 Build 6212

some bug fixes for windows port.

OpenBOR v3.0 Build 6203

Fixed issue with PSP video modes.

OpenBOR v3.0 Build 6196

v6196

restore new win-sdk tool