Updated runtime files.

runtime/ftplugin/awk.vim

@@ -0,0 +1,18 @@
+" Vim filetype plugin
+" Language:	awk, nawk, gawk, mawk
+" Maintainer:	Antonio Colombo <azc100@gmail.com>
+" Last Change:	2017 Feb 17
+
+" This plugin was prepared by Mark Sikora
+
+" Only do this when not done yet for this buffer
+if exists("b:did_ftplugin")
+  finish
+endif
+
+" Don't load another plugin for this buffer
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl commentstring<"
+
+setlocal commentstring=#\ %s