CMClose([meterType])
Close color meter interface.
meterType 1 is the PR650 (default)
meterType 2 is the CVI (need CVIToolbox)
meterType 3 is the CRS Colorimeter
meterType 4 is the PR655
2/15/02 dhb Wrote it.
4/13/02 dgp Cosmetic.
2/26/03 dhb Added more meter types.
3/27/03 dhb, jmh Fix up default argument.
2/07/09 mk, tbc Add PR-655 support.
Psychtoolbox/PsychHardware/CMClose.m