support for parallel dvo in mextract, avextract, avmerge, gstar, gcat; remove some if-def-ed out code already moved to libdvo; list -vectors and -buffers options (store names of vectors and buffers in lists); list -copy give error if missing source; catlist, hosts & remote functions to support parallel dvos; skyregion -save option; new skycoverage modes (-min-ubercal; -min-dmag-sys; -min-mcal; -max-mcal); gstar output formatting cleanups; add more average info to gstar output; functions for spectral similarity analysis; coords returns nans for projections off the sphere; fix cumulative function; add name:type option to opihi/read function (eg read a:float 2 b:time 3 c:int 4); line -frac option; vtype function to get vector types; threshold function; write -fits option; code for unfinished mtype function (matching vtype)
