updated for version 7.3.1088
Problem:    New regexp engine: \@<= and \@<! are not implemented.
Solution:   Implement look-behind matching.  Fix off-by-one error in old
	    regexp engine.
Added tag v7-3-1088 for changeset 2f51ee8825db
updated for version 7.3.1089
Problem:    Tests 86 and 87 fail on MS-Windows. (Ken Takata)
Solution:   Fix platform-specific stuff. (ZyX)
Added tag v7-3-1089 for changeset 79522bb17125
updated for version 7.3.1090
Problem:    New regexp engine does not support \z1 .. \z9 and \z(.
Solution:   Implement the syntax submatches.
Added tag v7-3-1090 for changeset 8db697ae406a