wrap fork so we can drop priority in child processes

src/mod/endpoints/mod_gsmopen/asterisk/celliax_additional.c

@@ -1185,7 +1185,7 @@ int celliax_serial_getstatus_AT(struct celliax_pvt *p)
 
             NOTICA("incoming SMS message:>>>%s<<<\n", CELLIAX_P_LOG, p->sms_message);
             pipe(fd1);
-            pid1 = fork();
+            pid1 = switch_fork();
 
             if (pid1 == 0) {    //child
               int err;
@@ -1735,7 +1735,7 @@ int celliax_serial_read_AT(struct celliax_pvt *p, int look_for_ack, int timeout_
 
                 NOTICA("incoming SMS message:>>>%s<<<\n", CELLIAX_P_LOG, p->sms_message);
                 pipe(fd1);
-                pid1 = fork();
+                pid1 = switch_fork();
 
                 if (pid1 == 0) {    //child
                   int err;

src/mod/endpoints/mod_gsmopen/gsmopen_protocol.cpp

@@ -3101,7 +3101,7 @@ int gsmopen_serial_getstatus_AT(private_t *tech_pvt)
 
 						DEBUGA_AT("incoming SMS message:---%s---\n", GSMOPEN_P_LOG, p->sms_message);
 						pipe(fd1);
-						pid1 = fork();
+						pid1 = switch_fork();
 
 						if (pid1 == 0) {	//child
 							int err;

src/mod/formats/mod_shell_stream/mod_shell_stream.c

@@ -108,7 +108,7 @@ static switch_status_t shell_stream_file_open(switch_file_handle_t *handle, cons
 	if (pipe(context->fds)) {
 		goto error;
 	} else {					/* good to go */
-		context->pid = fork();
+		context->pid = switch_fork();
 
 		if (context->pid < 0) {	/* ok maybe not */
 			goto error;

src/mod/xml_int/mod_xml_scgi/xml_scgi_server.pl

@@ -65,7 +65,7 @@ $SIG{CHLD} = "IGNORE";
 
 while (my $request = $scgi->accept) {
   # fork every new req into its own process (optional)
-  my $pid = fork();
+  my $pid = switch_fork();
 
   if ($pid) {
     $request->close();