updated for version 7.3.1009
Problem:    Compiler warning for ambiguous else.
Solution:   Add curly braces.
Added tag v7-3-1009 for changeset 57393dc4b811
updated for version 7.3.1010
Problem:    New regexp: adding \Z makes every character match.
Solution:   Only apply ireg_icombine for composing characters.
	    Alsl add missing change from patch 1008. (Ken Takata)
Added tag v7-3-1010 for changeset 36ddcf4cecbc
updated for version 7.3.1011
Problem:    New regexp engine is inefficient with multi-byte characters.
Solution:   Handle a character at a time instead of a byte at a time.  Also
	    make \Z partly work.
Added tag v7-3-1011 for changeset 55bcaa1d2749
updated for version 7.3.1012
Problem:    \Z does not work properly with the new regexp engine.
Solution:   Make \Z work.  Add tests.
Added tag v7-3-1012 for changeset 432a6b8c7d93
updated for version 7.3.1013
Problem:    New regexp logging is a bit messy.
Solution:   Consistently use #defines, add explanatory comment. (Taro Muraoka)
Added tag v7-3-1013 for changeset 1be43c095aff
updated for version 7.3.1014
Problem:    New regexp state dump is hard to read.
Solution:   Make the state dump more pretty. (Taro Muraoka)
Added tag v7-3-1014 for changeset 6a2005efa02b
updated for version 7.3.1015
Problem:    New regexp engine: Matching composing characters is wrong.
Solution:   Fix matching composing characters.
Added tag v7-3-1015 for changeset 45f97c349537
updated for version 7.3.1016
Problem:    Unused field in nfa_state.
Solution:   Remove lastthread.
Added tag v7-3-1016 for changeset 5cc98a5898cf
updated for version 7.3.1017
Problem:    Zero width match changes length of match.
Solution:   For a zero width match put new states in the current position in
	    the state list.
Added tag v7-3-1017 for changeset 532c2e850256
updated for version 7.3.1018
Problem:    New regexp engine wastes memory.
Solution:   Allocate prog with actual number of states, not estimated maximum
	    number of sates.
Added tag v7-3-1018 for changeset 80170d61a85c