Merge in the bridge_construction branch to make the system use the Bridging API.

Breaks many things until they can be reworked.  A partial list:
chan_agent
chan_dahdi, chan_misdn, chan_iax2 native bridging
app_queue
COLP updates
DTMF attended transfers
Protocol attended transfers


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@389378 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/config_options.c

@@ -222,6 +222,11 @@ int aco_option_register_deprecated(struct aco_info *info, const char *name, stru
 	return 0;
 }
 
+unsigned int aco_option_get_flags(const struct aco_option *option)
+{
+	return option->flags;
+}
+
 #ifdef AST_XML_DOCS
 /*! \internal
  * \brief Find a particular ast_xml_doc_item from it's parent config_info, types, and name