replaced all alias > folding thresholds in include/galsim/*.h and src/*.cpp
(#562)
modified GSParams folding threshold at wrapper level
(#562)
updated alias > folding threshold in demo7 in example scripts
(#562)
updated to folding threshold for lsst.yaml demo script
(#562)
made fold / alias switch at python layer
(#562)
Update INSTALL file to say that TMV v0.72 is required.
Allow alias_threshold as valid obsolete alias for folding_threshold.
(#562)
Change test suite back to using alias_threshold to make sure backward compatibility is working.
(#562)
Tidy up slightly.  Move the new code down to where the other GSParams code is in base.py.
(#562)
Merge branch 'master' into #562
Let check_diff work with python 2.5 as system python
Only try the extra mkl libs if there is already an mkl lib in the list from TMV.  Otherwise, errors can be confusing.
silly spacing issue
(#562)
add initial unit tests of pse module
(#516)
typo
(#516)
guard against import errors
(#516)
add missing import
(#516)
full unit test coverage for hsm.py
(#516)
full unit test coverage for shear.py
(#516)
expanded unit test for galsim.integ module
(#516)