updated to 7.4.589

updated to 7.4.589

7.4.553  various small issues
7.4.554  missing part of patch 7.4.519
7.4.555  test_close_count may fail for some combination of features
7.4.556  failed commands in Python interface not handled correctly
7.4.557  one more small issue
7.4.558  when the X server restarts Vim may get stuck
7.4.559  block append inside tab is wrong when virtualedit is set
7.4.560  memory leak using :wviminfo; Issue 296
7.4.561  Ex range handling is wrong for buffer-local user commands
7.4.562  segfault with wide screen and error in 'rulerformat'
7.4.563  no test for replacing on a tab in Virtual replace mode
7.4.564  FEAT_OSFILETYPE is used even though it's never defined
7.4.565  some ranges are not checked to be valid
7.4.566  :argdo, :bufdo, :windo and :tabdo don't take a range
7.4.567  non-ascii vertical separater characters are always redrawn
7.4.568  giving an error for ":0wincmd w" is a problem for some plugins
7.4.569  having CTRL-C interrupt does not check the mapping mode
7.4.570  building with dynamic library does not work for Ruby 2.2.0
7.4.571  can't build with tiny features
7.4.572  address type of :wincmd depends on the argument
7.4.573  mapping CTRL-C in Visual mode doesn't work
7.4.574  no error for eval('$')
7.4.575  Unicode character properties are outdated
7.4.576  redrawing problem with 'relativenumber' and 'linebreak'
7.4.577  matching with virtual column has overhead on very long lines
7.4.578  after "$" in an empty line getcurpos() returns negative number
7.4.579  wrong cursor positioning when 'linebreak' set and lines wrap
7.4.580  ":52wincmd v" still gives an invalid range error
7.4.581  compiler warnings for unitinialized variables
7.4.582  (after 7.4.577) can't match "%>80v" properly
7.4.583  with tiny features test 16 may fail
7.4.584  with tiny features test_command_count may fail
7.4.585  range for :bdelete does not work
7.4.586  parallel building of documentation html files is not reliable
7.4.587  conceal does not work properly with 'linebreak'
7.4.588  ":0argedit foo" puts the new argument in the second place
7.4.589  MS-Windows console: Vim can't handle greek utf-8 characters