patch 7.4.1743

Problem:    Clang warns for uninitialzed variable. (Michael Jarvis)
Solution:   Initialize it.

patch 7.4.1742

Problem:    strgetchar() does not work correctly.
Solution:   use mb_cptr2len().  Add a test. (Naruhiko Nishino)

patch 7.4.1741

Problem:    Not testing utf-8 characters.
Solution:   Move the right asserts to the test_expr_utf8 test.

patch 7.4.1740

Problem:    syn-cchar defined with matchadd() does not appear if there are no
            other syntax definitions which matches buffer text.
Solution:   Check for startcol. (Ozaki Kiichi, haya14busa, closes vim#757)

patch 7.4.1739

Problem:    Messages test fails on MS-Windows.
Solution:   Adjust the asserts.  Skip the "messages maintainer" line if not
            showing all messages.

patch 7.4.1738

Problem:    Count for ":messages" depends on number of lines.
Solution:   Add ADDR_OTHER address type.

patch 7.4.1737

Problem:    Argument marked as unused is used.
Solution:   Remove UNUSED.

patch 7.4.1736

Problem:    Unused variable.
Solution:   Remove it. (Yasuhiro Matsumoto)

patch 7.4.1735

Problem:    It is not possible to only see part of the message history.  It is
            not possible to clear messages.
Solution:   Add a count to ":messages" and a clear argument. (Yasuhiro
            Matsumoto)

patch 7.4.1734

Problem:    Test fails when not using utf-8.
Solution:   Split test in regularand utf-8 part.