WL#3337 (Event scheduler new architecture)

Remove SHOW SCHEDULER STATUS command and migrate the
information output to `mysqladmin debug` (COM_DEBUG)

SHOW SCHEDULER STATUS was introduced in 5.1.11, provided
some debug information about event scheduler internals and
was enabled only in debug builds.


sql/event_queue.cc:
  Remove SHOW SCHEDULER STATUS. Reporting still will be
  there but through COM_DEBUG (mysqladmin debug)
sql/event_queue.h:
  dump_internal_status cannot return an error, therefore it
  should be void.
sql/event_scheduler.cc:
  Remove SHOW SCHEDULER STATUS. Reporting still will be
  there but through COM_DEBUG (mysqladmin debug)
sql/event_scheduler.h:
  dump_internal_status cannot return an error, therefore it
  should be void.
sql/events.cc:
  Change from outputting the internal data from
  the wire to the standard output. SHOW SCHEDULER STATUS was
  removed.
sql/events.h:
  dump_internal_status() cannot return an error, therefore
  it should be void
sql/lex.h:
  remove SCHEDULER as recognized word. This is part
  of removing SHOW SCHEDULER STATUS
sql/sp_head.cc:
  SQLCOM_SHOW_SCHEDULER_STATUS has been removed
sql/sql_lex.h:
  SQLCOM_SHOW_SCHEDULER_STATUS has been removed
sql/sql_parse.cc:
  SQLCOM_SHOW_SCHEDULER_STATUS has been removed
sql/sql_test.cc:
  Dump Events' internal information on COM_DEBUG
sql/sql_yacc.yy:
  SQLCOM_SHOW_SCHEDULER_STATUS has been removed

1 files changed, 4 insertions, 0 deletions

diff --git a/sql/sql_test.cc b/sql/sql_test.cc
index b28aa4a1ce5..c4c40ea63c8 100644
--- a/sql/sql_test.cc
+++ b/sql/sql_test.cc
@@ -28,6 +28,8 @@
 #include <sys/malloc.h>
 #endif
 
+#include "events.h"
+
 static const char *lock_descriptions[] =
 {
   "No lock",
@@ -532,5 +534,7 @@ Estimated memory (with thread stack):    %ld\n",
 	 (int) info.keepcost,
 	 (long) (thread_count * thread_stack + info.hblkhd + info.arena));
 #endif
+
+  Events::get_instance()->dump_internal_status();
   puts("");
 }