updated for version 7.4.289
Problem:    Pattern with repeated backreference does not match with new regexp
	    engine. (Urtica Dioica)
Solution:   Also check the end of a submatch when deciding to put a state in
	    the state list.
Added tag v7-4-289 for changeset 99374096a76b
updated for version 7.4.290
Problem:    A non-greedy match followed by a branch is too greedy. (Ingo
	    Karkat)
Solution:   Add NFA_MATCH when it is already in the state list if the position
	    differs.
Added tag v7-4-290 for changeset b871734bf54e
updated for version 7.4.291
Problem:    Compiler warning for int to pointer of different size when DEBUG
	    is defined.
Solution:   use smsg() instead of EMSG3().
Added tag v7-4-291 for changeset b5972833add9
updated for version 7.4.292
Problem:    Searching for "a" does not match accented "a" with new regexp
	    engine, does match with old engine. (David Bürgin)
	    "ca" does not match "ca" with accented "a" with either engine.
Solution:   Change the old engine, check for following composing character
	    also for single-byte patterns.
Added tag v7-4-292 for changeset 60cdaa05a6ad
updated for version 7.4.293
Problem:    It is not possible to ignore composing characters at a specific
	    point in a pattern.
Solution:   Add the %C item.
Added tag v7-4-293 for changeset 10fc95f48546