emulators/qmc2: Fix build on systems <13.x: SDL.h not found

• Update ${RUN_DEPENDS} to reflect current mame/mess versions
• Add two more files to ${SHEBANG_FILES}
• Add ${EXTRA_PATCHES} conditional to compensate for missing \S Special Expression support in GNU grep on system <13.x (if that is even the problem)
• Add files/extra-scripts-sdl-includepaths to patch ${WRKSRC}/scripts/sdl-includepath.sh

PR: 267980