Squashed '.vim/bundle/signify/' changes from f35b8df..fcfb40c

fcfb40c Avoid variable type mismatch
35b0b02 Merge pull request 70 from chlunde
d3ead71 Avoid useless calls to executable()
79bf0c4 Fix CVS handling
f084f1d CVS returns 1 on diff and error
0b6ffd8 Add simple directory cache
4d47526 Merge pull request 69 from pekepeke
6a157eb Fix backwards logic in filter()
9eedb00 Doc: only check installed VCS
fcf5d14 Refactor VCS detection #2
5c386c7 Merge pull request 68 from bling/performance
a2b96be Refactor VCS detection
3133fce Improve detection performance (#67)

git-subtree-dir: .vim/bundle/signify
git-subtree-split: fcfb40c45675051dc051f2141f535f6cc635aed8
Merge latest signify, 09617b8a74eb73d4b90b43de8694c0b1eed6e25c.
Squashed '.vim/bundle/SkyBison/' changes from fbbd8c6..a58751c

a58751c Added g:skybison_numberselect, ctrl-g, fixed docs/readme

git-subtree-dir: .vim/bundle/SkyBison
git-subtree-split: a58751ca8b9255524d92a9b401c267880159dc97
Merge latest SkyBison, f420a14a71f0b79db237efc32635c4bdecf2308a.
Add SkyBison bindings
Remove buffalo (and vimple)