updated for version 7.3.1146
Problem:    New regexp engine: look-behind match not checked when followed by
	    zero-width match.
Solution:   Do the look-behind match before adding the zero-width state.
Added tag v7-3-1146 for changeset e3f9e33fb28c
updated for version 7.3.1147
Problem:    New regexp engine: regstart is only used to find the first match.
Solution:   Use regstart whenever adding the start state.
Added tag v7-3-1147 for changeset 3cd3cc1e9119
updated for version 7.3.1148
Problem:    No command line completion for ":syntime".
Solution:   Implement the completion. (Dominique Pelle)
Added tag v7-3-1148 for changeset 220bdea4f579
updated for version 7.3.1149
Problem:    New regexp engine: Matching plain text could be faster.
Solution:   Detect a plain text match and handle it specifically.  Add
	    vim_regfree().
Added tag v7-3-1149 for changeset 66803af09906