Johan Bregeon / ctools

iteritems() does no longer exist in Python 3.

Add __version__ variable to ctools Python module.

Rename __init__.py file into __init__.py.in, add version number, and __init__.py creation instruction into configure.ac.

# Conflicts:
#	cscripts/Makefile.am
#	doc/source/reference_manual/index.rst

… ctcubemask for this purpose

For the moment, no test is done (I cannot get the cscript import working correctly).

…definition, one of the erg_mean is replaced by e_mean

…tion by a factor of 20 w/r to the counts cube.

Also document the new anumbins parameter.