work in progress
Merge remote-tracking branch 'origin/master' into merge_calib

Conflicts:
	pyFAI-src/calibration.py
Merge remote-tracking branch 'origin' into merge_calib
remove the .py extension on the script (part of debian packaging)
Update options for polarization corrections in scripts
new additional docstrings
better documentation for scripts
correct few errors in azimuthal integration
Start integrating HDF5
Revert solid angle correction after all calculation re-done
optimize threshold
Big refactoring of calibration ...
I don't claim it works but it has been heavily refactored
Calibration works as before
cosmetic enhancements
recalibration also works
added the keep option for recalib (to keep old control points)
Merge branch 'merge_calib'

Conflicts:
	pyFAI-src/__init__.py
	pyFAI-src/calibration.py
	pyFAI-src/geometry.py
	test/testUtils.py