Cobolt: Fix serial receive terminator
Cobolt: Fix serial receive terminator

CR -> CRLF. Apparently it was "working" in MM 1.3 despite the device
always sending CRLF.

git-svn-id: 03a8048b5ee8463be5048a3801110fb50f378627@15508 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

kmdouglass/Micro-Manager,kmdouglass/Micro-Manager