Fixes Bug 881623 - Fixed bad call in getting number of CPUs from MDSW

the parameter list was incorrect for the call within Processor2012 that extracts the number of CPUs from the output of MDSW.  The problem was corrected.  Some tests were added to look at the results of reading the first three lines of the output of MDSW.  The tests are not comprehensive, as the effort to do so is beyond the scope of this bug.