use macro for EXTERN "C" begin and end lines in header files to clean up the headers, and to eliminate a format bug in emacs.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@1291 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_caller.h

@@ -53,15 +53,10 @@
 #ifndef SWITCH_CALLER_H
 #define SWITCH_CALLER_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-#ifdef _FORMATBUG
-}
-#endif
-
 #include <switch.h>
 
+BEGIN_EXTERN_C
+
 /*! \brief Call Specific Data
  */
 struct switch_caller_profile {
@@ -186,10 +181,7 @@ SWITCH_DECLARE(switch_caller_profile *) switch_caller_profile_clone(switch_core_
 
 SWITCH_DECLARE(void) switch_caller_profile_event_set_data(switch_caller_profile *caller_profile, char *prefix, switch_event *event);
 
-
-#ifdef __cplusplus
-}
-#endif
+END_EXTERN_C
 
 /** @} */