Update c-mode

Updated to C11
Merge pull request #333 from rdotdk/master

Update c-mode
Update the C++ dict to include keywords introduced in C++11.
Merge pull request #335 from Fanael/master

Update the C++ dict to include keywords introduced in C++11.
Fixed flycheck workaround when completion is aborted(#300)
Fixed flycheck workaround to don't use defvar-local(#300)
Fixed to forgot to quote symbol in use of make-variable-buffer-local
Merge pull request #343 from auto-complete/fix-for-flycheck

Fix for flycheck
Use Cask instead of git submodule
Fix test files for using Cask
remove submodules
Remove Emacs 23

Because Cask does not support Emacs 23.
Merge pull request #344 from auto-complete/use-cask

Use cask
Use make-local-variable instead of make-variable-buffer-local
Untabiffy
Merge pull request #345 from auto-complete/fix-for-buffer-local-variable

Fix for buffer local variable
add more words to python dict
removed enumerate by mistake
Merge pull request #347 from gcd0318/master

add more words to python dict
Add less-css-mode to ac-modes