updated for version 7.4.442
Problem:    Using unitinialized variable.
Solution:   Pass the first window of the tabpage.
Added tag v7-4-442 for changeset 8c3c067b4ae3
updated for version 7.4.443
Problem:    Error reported by ubsan when running test 72.
Solution:   Add type cast to unsigned. (Dominique Pelle)
Added tag v7-4-443 for changeset f1ba154c3a12
updated for version 7.4.444
Problem:    Reversed question mark not recognized as punctuation. (Issue 258)
Solution:   Add the Supplemental Punctuation range.
Added tag v7-4-444 for changeset d4cc9f48d5a4
Merge remote-tracking branch 'vim-clone/master' into bleeding-edge