vim/glsl: Remove unbundled glsl configuration

Now that ~/.vim/bundle/glsl is installed, the glsl configuration in ~/.vimrc can
be removed.
vim: Fix location of bundles

Pathogen's default location for bundles is '~/.vim/bundle'. Move all bundles
from ~/.vim/bundles to there.
vim/c: Recognize more C/C++ comment styles

Recogize the style that LLVM uses for Doxygen comments, '///'.
vim/xml: Add CiteRefEntry function
vim/pkgbuild: Use standard formatting
vim/muttrc: Highlight nonstandard mutt-notmuch elements
vim/colors: Import ~/.vim/colors
vim: Select colorscheme kiwi_dark
vim/proj: Import configs for mesa and piglit