TEMP: Re-add OpenSPIM DAL, deprecated

The OpenSPIM DAL source code will remain here for the time being,
augmented with a message box on startup to indicate that the user should
reconfigure their Micro-Manager hardware. (The OpenSPIM DAL has been
superceded by the PicardStage DAL.)

Signed-off-by: Luke Stuyvenberg <stuyvenberg@wisc.edu>