[vim] Replace taglist with tagbar

Signed-off-by: Han-Pei Lin <aeglos.tw@gmail.com>
[vim] Use Vundle to manage taglist & tagbar

Signed-off-by: Han-Pei Lin <aeglos.tw@gmail.com>
[vim] Use Vundle to manage AutoComplPop(acp)

Signed-off-by: Han-Pei Lin <aeglos.tw@gmail.com>
[vim] Remove EasyGrep, since I'm using Ag now.

Signed-off-by: Han-Pei Lin <aeglos.tw@gmail.com>
[vim] Use Vundle to manage CCTree

Signed-off-by: Han-Pei Lin <aeglos.tw@gmail.com>