Corrected some module issues introduced by r383579.

When I moved res_json.c to json.c, I left the MODULE_INFO stuff in there,
which was interesting if you ran module show. I also forgot to call what
was in module_load() from asterisk main().


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@383611 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/json.h

@@ -32,6 +32,11 @@
 
 /*!@{*/
 
+/*!
+ * \brief Initialize the JSON library.
+ */
+void ast_json_init(void);
+
 /*!
  * \brief Set custom allocators instead of the standard ast_malloc() and ast_free().
  * \since 12.0.0