Do not stop on SIGPRIO signals by default

This signal does not indicate an error condition, so the default
behavior when receiving this signal should be to resume execution
silently.

gdb/ChangeLog:

        Do not stop on SIGPRIO signals by default
        * infrun.c (_initialize_infrun): Unset signal_stop and
        signal_print for TARGET_SIGNAL_PRIO.

gdb/ChangeLog

@@ -1,3 +1,9 @@
+2011-01-06  Joel Brobecker  <brobecker@adacore.com>
+
+	Do not stop on SIGPRIO signals by default
+	* infrun.c (_initialize_infrun): Unset signal_stop and
+	signal_print for TARGET_SIGNAL_PRIO.
+
 2011-01-06  Joel Brobecker  <brobecker@adacore.com>
 
 	* ada-tasks.c: Fix style violation in comment.

gdb/infrun.c

@@ -6927,6 +6927,8 @@ leave it stopped or free to run as needed."),
   signal_print[TARGET_SIGNAL_URG] = 0;
   signal_stop[TARGET_SIGNAL_WINCH] = 0;
   signal_print[TARGET_SIGNAL_WINCH] = 0;
+  signal_stop[TARGET_SIGNAL_PRIO] = 0;
+  signal_print[TARGET_SIGNAL_PRIO] = 0;
 
   /* These signals are used internally by user-level thread
      implementations.  (See signal(5) on Solaris.)  Like the above