extended dictionary interface w/ methods to return all ROC/DTB/TBM names
removed pyxar dependence in pxar python wrapper

- dut object only defined in pyxar and not really needed in pxar
added dictionary support in python wrapper
first version of python command line

- uses cmd module
- uses argparse for command line argument parsing
- uses dictionaries for dac names
fixed printout on wrong rocid in api

- needed static cast for int
fixed singleton mem handling on python/cython side
changed python cmd line script argument verification

- now using decorator instead of argparse (less overhead)
- tuned tab-completion handling
added small script for python cmd line startup

- sets paths to libraries before starting prompt
Merge remote-tracking branch 'simon/cython_manual_interface' into cython_manual_interface
Merge remote-tracking branch 'simon/cython_manual_interface' into cython_manual_interface

Conflicts:
	core/cython/PyPxarCore.pyx