Introduce 'vcard' option for the modules supporting vCards

The mapping between vCard's XML elements and YAML elements
of 'vcard' option is straightforward. For example, if you
want mod_muc to return the following vCard:
```
<vCard xmlns='vcard-temp'>
  <FN>Conferences</FN>
  <ADR>
    <WORK/>
    <STREET>Elm Street</STREET>
  </ADR>
</vCard>
```
you need to set the configuration as:
```
modules:
  ...
  mod_muc:
    vcard:
      fn: Conferences
      adr:
        -
          work: true
          street: Elm Street
  ...
```

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/opt_types.sh b/tools/opt_types.sh
index dba1f6679..658357cb2 100755
--- a/tools/opt_types.sh
+++ b/tools/opt_types.sh
@@ -393,6 +393,9 @@ spec(host, 0, _, _) ->
     erl_types:t_binary();
 spec(hosts, 0, _, _) ->
     erl_types:t_list(erl_types:t_binary());
+spec(vcard_temp, 0, _, _) ->
+    erl_types:t_sup([erl_types:t_atom(undefined),
+		     erl_types:t_tuple()]);
 spec(options, A, [Form|OForm], Mod) when A == 1; A == 2 ->
     case erl_syntax:type(Form) of
 	map_expr ->