Add new 5th-color detected test case.
Always map RC_EMPTY to EMPTY.

It turned out that sometimes RC_EMPTY is mapped to normal puyo color.
We need to map RC_EMPTY to EMPTY always.
Add FPS flag to wii_connector_server.
Add another 5th color testcase.
Reset the analyzed results between games.

Some information are reused in the next game. However, this was causing
5th color detection. We need to clear the analyzer result between the games.