Normalize: major speed-up via bypassing masked array division
don't run allskymap module.
update
replace __new__ with __cinit__ to accomodate cython 0.14.1
regenerate C source with Cython 0.14.1
add new examples from Tom Loredo
celestial allsky map example from Tom Loredo.
cbook.report_memory: restore compatibility with earlier subprocess versions
Removed misleading returns in xscale() and yscale().
Quick workaround for dviread bug #3175113
