updated to 7.4.761

updated to 7.4.761

7.4.730  when setting the crypt key text in swap file may be corrupted
7.4.731  the tab menu shows "Close tab" even when it doesn't work
7.4.732  the cursor line is not always updated for the "O" command
7.4.733  test_listchars breaks on MS-Windows
7.4.734  ml_get error when using "p" in Visual selection in last line
7.4.735  wrong argument for sizeof()
7.4.736  invalid memory access
7.4.737  on MS-Windows vimgrep over arglist doesn't work (Issue 361)
7.4.738  (after 7.4.732) can't compile without the syntax HL feature
7.4.739  in a string "\U" only takes 4 digits, should be eight
7.4.740  ":1quit" works like ":.quit"
7.4.741  when using += with ":set" a trailing comma is not recognized
7.4.742  no vertical split when loading buffer for a quickfix command
7.4.743  "p" in Visual mode causes an unexpected line split
7.4.744  no tests for Ruby and Perl
7.4.745  entries returned by getmatches() dont work with setmatches()
7.4.746  ":[count]tag" is not always working
7.4.747  ":cnext" may jump to wrong column when 'virtualedit' is "all"
7.4.748  (after 7.4.745) buffer overflow
7.4.749  (after 7.4.741) two consecutive commas are OK for some options
7.4.750  cannot build with clang 3.5 on Cygwin with perl enabled
7.4.751  it is not obvious how to enable the address sanitizer
7.4.752  Unicode 8.0 not supported
7.4.753  appending in Visual mode with 'linebreak' set is wrong
7.4.754  using CTRL-A in Visual mode does not work well
7.4.755  it is not easy to count the number of characters
7.4.756  can't use strawberry Perl 5.22 x64 on MS-Windows
7.4.757  cannot detect the background color of a terminal
7.4.758  'conceallevel' in command-line window hides first character
7.4.759  building with Lua 5.3 doesn't work, symbols have changed
7.4.760  spelling mistakes are not displayed after ":syn spell"
7.4.761  (after 7.4.757) incomplete request-background implementation