[GNC] Confusing version numbers

[David G. Pickett]

It is, generally a military style numbering, so the '.' is not a decimal point, more a tab, not an alphanumeric sort but a numeric sort.  One AT&T project started their order numbers at 100,000,000 so they were always 9 digits with 900M headroom.  Maybe we could make the first revision after 4 as 4.100, so the field is in both numeric and alpha sort order?