initial commit of psfex_hacking branch
arbitrary checkpoint
change (by at most one pixel) choice of xy0 in HscPsfBase::doComputeImage()
Merge branch 'master' into psfex_hacking
set _xmin, _xmax, _xmean, _ymin, _ymax, _ymean in constructor
suppress some debugging output. CHECKPOINT: FakePsfexDeterminer agrees with psfex
polypix regression test rampage begins here
vignet_resample -> my_resample
my_resample -> upsample, downsample
switch to hscpsf spatial model classes
clean up psf_clean()
transpose comp array
remove psf_build
move some fields into make_clean_chi2
fix some _nx -> _psf_nx bugs, minor cleanup
minor cleanup
more cleanup and rearrangement
merge psfex_hacking to master