patch 7.4.873

Problem:    Compiler warning for unused variable. (Tony Mechelynck)
Solution:   Remove the variable.  Also fix int vs long_u mixup.

patch 7.4.872

Problem:    Not using CI services available.
Solution:   Add configuration files for travis and appveyor. (PR vim#401)

patch 7.4.871

Problem:    Vim leaks memory, when 'wildignore' filters out all matches.
Solution:   Free the files array when it becomes empty.

patch 7.4.870

Problem:    May get into an invalid state when using getchar() in an
            expression mapping.
Solution:   Anticipate mod_mask to change. (idea by Yukihiro Nakadaira)

patch 7.4.869

Problem:    MS-Windows: scrolling may cause text to disappear when using an
            Intel GPU.
Solution:   Call GetPixel(). (Yohei Endo)

patch 7.4.868

Problem:    'smarttab' is also effective when 'paste' is enabled. (Alexander
            Monakov)
Solution:   Disable 'smarttab' when 'paste' is set. (Christian Brabandt)
            Do the same for 'expandtab'.

patch 7.4.867

Problem:    Can't build on MS-Windows. (Taro Muraoka)
Solution:   Adjust #ifdef.

patch 7.4.866

Problem:    Crash when changing the 'tags' option from a remote command.
            (Benjamin Fritz)
Solution:   Instead of executing messages immediately, use a queue, like for
            netbeans. (James Kolb)

patch 7.4.865

Problem:    Compiler warning for uninitialized variable.
Solution:   Initialize.

patch 7.4.864

Problem:    Tiny build fails.
Solution:   Put qf_ items inside #ifdef.