NeoBundle uses runtime directory

* Initial version included here as submodule
* Use version from g:vim_vardata/bundles otherwise
* This avoids polluting the configuration directory with bundles

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "bundle/neobundle.vim"]
-	path = bundle/neobundle.vim
+[submodule "neobundle-initial"]
+	path = neobundle-initial
 	url = https://github.com/Shougo/neobundle.vim.git
-[submodule "bundle/vimproc.vim"]
-	path = bundle/vimproc.vim
-	url = https://github.com/Shougo/vimproc.vim.git