updated to 7.4.273

7.4.259  warning for misplaced "const"
7.4.260  no error for function name with colon or lowercase char
7.4.261  an interactive :s to replace a "\n" with line break may fail
7.4.262  duplicate code in regexec()
7.4.263  GCC 4.8 compiler warning for hiding a declaration
7.4.264  (after 7.4.260) can't define function g:Foo()
7.4.265  (after 7.4.260) can't call function with "g:" in an expression
7.4.266  test 62 fails
7.4.267  (after 7.4.178) '[ mark is in the wrong position after "gq"
7.4.268  exists() on a funcref for script-local function does not work
7.4.269  CTRL-U in Insert mode does not work after using a cursor key
7.4.270  comparing pointers instead of the string they point to
7.4.271  compiler warning on 64 bit windows
7.4.272  using just "$" does not cause an error message
7.4.273  "make autoconf/reconfig" may run configure pointlessly