[PATCH] help: add pad function to template help

[Thomas De Schampheleire]

# HG changeset patch
# User Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>
# Date 1408972209 -7200
#      Mon Aug 25 15:10:09 2014 +0200
# Node ID 6dd4d3afa394f86e29968aaaed6f25712c6cde9f
# Parent  90cf454edd709c616d1e5ea4f30fb4d02f0c01a4
help: add pad function to template help

Commit aa51392da507 introduced a pad function for use in templates, but did
not add the corresponding documentation to 'hg help templating'.

diff --git a/mercurial/help/templates.txt b/mercurial/help/templates.txt
--- a/mercurial/help/templates.txt
+++ b/mercurial/help/templates.txt
@@ -57,6 +57,8 @@
 
 - label(label, expr)
 
+- pad(text, width[, fillchar, right])
+
 - revset(query[, formatargs])
 
 - rstdoc(text, style)