Update runtime files.

runtime/indent/mail.vim

@@ -0,0 +1,13 @@
+" Vim indent file
+" Language:	Mail
+" Maintainer:	Bram Moolenaar
+" Last Change:	2009 Jun 03
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+" What works best is auto-indenting, disable other indenting.
+" For formatting see the ftplugin.
+setlocal autoindent nosmartindent nocindent indentexpr=