vim: Update bundles (submodules)

Signed-off-by: Carl Helmertz <helmertz@gmail.com>
vim: Replace snipmate with <leader>vdd

That's the only command used anyway. In insert or visual mode, use ,vdd
to insert php debug information.

This makes me not need to worry about integrating with YouCompleteMe

Signed-off-by: Carl Helmertz <helmertz@gmail.com>