Setup to debug clock configuration code

Added base code to measure timer peroid of the main program loop.
Configured clock and PLL options
Wrote clock configuration function

Performs clock switch to primary XC oscillator + PLL to run at 80MHz or
40MIPS
Minor modification.  Made objArray part of the pyComm name space
Tuned Program Loop

Finished tuning program loop timing.  Setup for 50Hz tick rate.  Should
I bump to 60 Hz to make a clock? -- TBD
Merge branch 'Feature---Program-Loop' into Development