Now also allow .png and .pgl graphic file types.
Now redistribute Winteracters plotconv program which can be used to view and convert graphics files.
Revised residual plots to report more than 9 sections at 4 sections per page.
Fix bug initializing variance in idv(units)
Fix new stringsize bug in graphics
Fix bug recognising Command Line args for !dopart
Fix bug in Vpredict KsigmaK parsing
