Modify Originate input syntax

This adds the | to the originate syntax 
making it possible to put a list of urls to call and attempt
to call them one at a time until one of them is successful or there
are none of them left

The original & delimited list is valid for each step in the | separated
list

Example
sofia/test-int/3920@10.3.3.104|sofia/test-int/3910@10.3.3.104&sofia/test-int/3920@10.3.3.104

first call 1 location and if that results in a failure, try 2 at once on the next go



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2996 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_utils.h

@@ -151,7 +151,7 @@ switch_mutex_unlock(obj->flag_mutex);
 
 
 /*!
-  \brief Free a pointer and set it to NULL unles it already is NULL
+  \brief Free a pointer and set it to NULL unless it already is NULL
   \param it the pointer
 */
 #define switch_safe_free(it) if (it) {free(it);it=NULL;}