Malloc is ready for production, mark it so in the docs

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3240 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/varnishd.1

@@ -239,7 +239,6 @@ The following storage types are available:
 .It Cm malloc
 Storage for each object is allocated with
 .Xr malloc 3 .
-Not recommended for production use.
 .It Cm file Ns Op Ns , Ns Ar path Ns Op Ns , Ns Ar size Ns Op Ns , Ns Ar granularity
 Storage for each object is allocated from an arena backed by a file.
 This is the default.