Merge pull request Shougo#271 from Shougo/fix-appveyor

Fix AppVeyor builds

Merge pull request Shougo#224 from Shougo/src

Fix Shougo#220 split to bin and src files

Merge pull request Shougo#221 from k-takata/topic/enable-test-on-appv…

…eyor

[WIP] Enable test on AppVeyor

Merge pull request Shougo#218 from k-takata/topic/improve-tests

[WIP] Improve tests

Merge pull request Shougo#188 from MPogoda/master

Propagate compilation flags from environment vars.

command line strings should also be converted to the systemencoding

- Fixed analyze shebang.

- Fixed for ipython.

- Ver.5.3 is released.

- Released vimproc Ver.5.1.