Revert "Don't bother resuming/pausing around savestates."

This reverts commit 8f9ea31a87e74f4b595d21bf633859205e1a0ec1.
Revert "Fix downcount check without fastmem in jr."

This reverts commit 7eb9af271bff2a82f16e11da7693d6fec81e10e5.