update manual section on +HOSTNBR

fix NZPHOT_Q init bug for refactor

can finally readback HOSTGALz arrays generated by sim; still in REFAC_DATA_FLAG mode

more REFAC_DATA devel with HOSTGALz strucure

more REFAC_DATA_FLAG devel

fix +HOSTNBR bug from Feb 23 git issue 1615

replace NULL_1D with NULL_D, etc ...

fix bug reading SIM_WGT_POPULATION with TEXT format

fix to work without biasCor by adding --nbin_z arg

Merge branch 'master' of github.com:RickKessler/SNANA

begin data stream update using REFAC_DATA_FLAG to protect original code

Merge pull request #1635 from RickKessler/new_branch_1

make_hostlib_diffsky: add OVERRIDE_FILE mag injection via core_tag join

start HOSTGALz refactor for data stream

subtle fix in store_PARSE_WORDS