WL#5142 FLUSH LOGS should take optional arguments for which log(s) to flush

Support for flushing individual logs, so that the user can
selectively flush a subset of the server logs.

Flush of individual logs is done according to the 
following syntax:

  FLUSH <log_category> LOGS;

The syntax is extended so that the user is able to flush a
subset of logs:

  FLUSH [log_category LOGS,];

where log_category is one of:
  SLOW
  ERROR
  BINARY
  ENGINE
  GENERAL
  RELAY.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/log.h b/sql/log.h
index 9be86b797a7..76ca18c8288 100644
--- a/sql/log.h
+++ b/sql/log.h
@@ -570,6 +570,8 @@ public:
   void init_base();
   void init_log_tables();
   bool flush_logs(THD *thd);
+  bool flush_slow_log();
+  bool flush_general_log();
   /* Perform basic logger cleanup. this will leave e.g. error log open. */
   void cleanup_base();
   /* Free memory. Nothing could be logged after this function is called */