Remove os_msdos.txt due to dropped MS-DOS support
Runtime: Support Arch Linux/Pacman file types.
vim-patch:7.4.220

Problem:    Test 105 does not work in a shadow dir. (James McCoy)
Solution:   Omit "src/" from the checked path.

https://code.google.com/p/vim/source/detail?r=v7-4-220
coverity/62620: fix uninitialized scalar variable
Spelling fixes
Merge pull request #1093 from paulburlumi/coverity-62620

coverity/62620: fix uninitialized scalar variable
Merge pull request #1111 from epmatsw/spellcheck2

More Typo Fixes
Merge pull request #1104 from Hinidu/vim-patch-7.4.220

vim-patch:7.4.220
Merge pull request #1082 from fornwall/remove-os-msdos-txt

Remove os_msdos.txt due to dropped MS-DOS support
Merge pull request #1087 from fwalch/archlinux-filetypes

Runtime: Support Arch Linux/Pacman file types.
Remove version{4,5,6,7}.txt
Update CONTRIBUTING.md and README.md #740

- recommend task/subtask convention for commit messages
Merge pull request #1116 from fornwall/remove-versions-txt

Remove version{4,5,6,7}.txt
test/path: add tests for concat_fnames()
Remove third argument of concat_fnames().

Running `$ ag concat_fnames` reveals that the third argument is `true`,
except for one instance where vim_strcat() can be used instead.
Macroize stpcpy and xstpncpy.