updated for version 7.3.1085
Problem:    New regexp engine: Non-greedy multi doesn't work.
Solution:   Implement \{-}.
Added tag v7-3-1085 for changeset 811a4c9b51d8
updated for version 7.3.1086
Problem:    Old regexp engine accepts illegal range, new one doesn't.
Solution:   Also accept the illegal range with the new engine.
Added tag v7-3-1086 for changeset c1622ff9ed8d