updated for version 7.3.970
Problem:    Syntax highlighting can be slow.
Solution:   Include the NFA regexp engine.  Add the 'regexpengine' option to
	    select which one is used. (various authors, including Ken Takata,
	    Andrei Aiordachioaie, Russ Cox, Xiaozhou Liua, Ian Young)
Added tag v7-3-970 for changeset ccecb03e5e8b
updated for version 7.3.971
Problem:    No support for VS2012 static code analysis.
Solution:   Add the ANALYZE option. (Mike Williams)
Added tag v7-3-971 for changeset 8d6bb2338a58
updated for version 7.3.972
Problem:    Cursor not restored after InsertEnter autocommand if it moved to
	    another line.
Solution:   Also restore if the saved line number is still valid.  Allow
	    setting v:char to skip restoring.
Added tag v7-3-972 for changeset ba53304245f0
updated for version 7.3.973
Problem:    Compiler warnings. Crash on startup. (Tony Mechelynck)
Solution:   Change EMSG2 to EMSGN. Make array one character longer.
Added tag v7-3-973 for changeset 09e1e574a52d