Remove pthread.h from source. We should be using asterisk/lock.h everywhere instead (except in asterisk/lock.h).

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3277 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_hasnewvoicemail.c

@@ -37,14 +37,13 @@
 #include <asterisk/channel.h>
 #include <asterisk/pbx.h>
 #include <asterisk/module.h>
+#include <asterisk/lock.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
 #include <stdlib.h>
 #include <dirent.h>
 
-#include <pthread.h>
-
 #include "../astconf.h"
 
 static char *tdesc = "Indicator for whether a voice mailbox has messages in a given folder.";