Long overdue runtime update.

runtime/ftplugin/gdb.vim

@@ -0,0 +1,12 @@
+" Vim filetype plugin file
+" Language:	gdb
+" Maintainer:	Michaël Peeters <NOSPAMm.vim@noekeon.org>
+" Last Changed: 26 Oct 2017
+
+if exists("b:did_ftplugin") | finish | endif
+let b:did_ftplugin = 1
+
+setlocal commentstring=#%s
+
+" Undo the stuff we changed.
+let b:undo_ftplugin = "setlocal cms<"