Update runtime files.

runtime/ftplugin/cfg.vim

@@ -0,0 +1,19 @@
+" Vim filetype plugin file
+" Language:		Configuration File
+" Maintainer:		Christian Brabandt <cb@256bit.org>
+" Latest Revision:	2018-12-24
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl cms< fo<"
+
+setlocal commentstring=#\ %s formatoptions-=t formatoptions+=croql
+
+let &cpo = s:cpo_save
+unlet s:cpo_save