bump submodules

* vim/bundle/command-t a6a6048...e926704 (1):
  > doc: don't suggest `bundle install`

* vim/bundle/fugitive 3b27827...5298448 (4):
  > Fix :Glog on Windows
  > Re-enable editing files named index
  > Show diff from :Gstatus interally
  > Follow symlinks

* vim/bundle/gitv a50dc10...029ffca (1):
  > Fix messing with Vim's registers.

* vim/bundle/nerdtree 2cb0fc7...a1433c4 (5):
  > update the doc for NERDTreeCasadeOpenSingleChildDir
  > default NERDTreeCasadeOpenSingleChildDir to 1
  > Merge pull request #180 from pendulm/master
  > Merge pull request #172 from stephenprater/master
  > Merge pull request #178 from franksort/master

* vim/bundle/snipmate-snippets 1ccf1fb...a558a97 (14):
  > Merge pull request #117 from phenwoods/master
  > Merge pull request #118 from georgeguimaraes/patch-1
  > Merge pull request #116 from voithos/master
  > Merge pull request #115 from Draygera/master
  > Merge pull request #114 from sudar/beerware
  > Fixed the BlankState class snippet
  > Fixed snippet map+
  > Added snippet bun for vim
  > Removed empty lines in snippet cla for ruby
  > Replaced bracket pair by spaces in snippet bef,aft for ruby
  > Removed trailing whitespace for ruby
  > Fixed escaping of '"' in snippet tas for ruby
  > Added encoding to shebang of ruby
  > Merge pull request #112 from Draygera/master

* vim/bundle/syntastic 1e94b98...7b3b63e (9):
  > Merge pull request #292 from kongo2002/c_errorformat
  > Merge pull request #289 from szw/master
  > Merge pull request #282 from khussein/perl_Ilib
  > Merge pull request #279 from johntyree/master
  > refactor the checks for the shell/shellpipe hack compatability
  > Merge remote-tracking branch 'qbit/master'
  > Merge pull request #275 from eharmon/master
  > Merge pull request #281 from latestrevision/master
  > Merge pull request #284 from ixti/patch-1

* vim/bundle/vim-git 3d31cb0...2d54fb2 (1):
  > Improve 'formatoptions'

* vim/bundle/vim-ls 5208318...7039a6c (6):
  > Merge pull request #5 from adrusi/master
  > Merge pull request #6 from mikaelengstrom/master
  > merge with vim-coco
  > merge with vim-coco
  > dashes in variable intrepolation
  > added const/var

* vim/bundle/vim-nerdtree-tabs e6f5dad...edd6d32 (10):
  > fix initialization, put it in one place
  > ensure s:is_nerdtree_globally_focused is always defined
  > Merge pull request #22 from ereOn/patch-1
  > Added NERDTreeSteppedOpen/NERDTreeSteppedClose functions
  > readme - moved Features above Installation
  > readme - removed stillmaintained.com badge (the service is being shut down)
  > Merge branch 'develop', release v1.3.0
  > Merge branch 'develop'
  > readme formatting
  > Merge pull request #19 from denysonique/patch-1

* vim/bundle/vim-snipmate 3f52de4...34ab1a7 (2):
  > Merge pull request #95 from kucaahbe/master
  > allow overwriding individual keys in scope_aliases

* vim/bundle/zencoding-vim 8194ee6...d5a3582 (11):
  > behave wrap with abbr if dollar_expr is set.
  > add new option dollar_expr that don't replace $ to numbers.
  > fixed bug that '#' was appended with input:text in haml.
  > fix test.
  > fix escape filter. close #85
  > fix test.
  > add lang.vim
  > cache result of file types checking.
  > check empty.
  > fix indent.
  > fix analyzing jpeg image size.

Signed-off-by: Justin de Vesine <ziz@ziz.org>