updated for version 7.3.1194
Problem:    Yaml highlighting is slow.
Solution:   Tune the estimation of pattern failure chance.
Added tag v7-3-1194 for changeset 91136a41f83f
updated for version 7.3.1195
Problem:    Compiler warning for unitialized variable. (Tony Mechelynck)
Solution:   Set the length to the matching backref.
Added tag v7-3-1195 for changeset 4837fd61be52
updated for version 7.3.1196
Problem:    Old regexp engine does not match pattern with backref correctly.
	    (Dominique Pelle)
Solution:   Fix setting status.  Test multi-line patterns better.
Added tag v7-3-1196 for changeset 56fbf60e9476