Re-apply missing changeset, orignally pushed by elliot

Add define YASSL_PREFIX when compiling yassl

Import patch from yaSSL
- avoid allocating memory for each call to 'EVP_md5' and 
  'EVP_des_ede3_cbc' which were not released until server was stopped
- Those functions are used from the SQL function 'des_encrypt' and
  'des_decrypt'.

Add new define YASSL_PREFIX beforee including ssl.h to activate inclusion of prefix_*.h files

Bug#20022 mysql-test-run can't be run with secure connections turned on for all testcases
- Part 1, fixes rpl- and federated-tests where connection is made to 127.0.0.1

- Include prefix files that renames all public functions in yaSSLs
  OpenSSL API to ya<function_name>. They will otherwise conflict
  with OpenSSL functions if loaded by an application that uses OpenSSL
  as well as libmysqlclient with yaSSL support.

Bug#18235: assertion/crash when windows mysqld is ended with ctrl-c
  
Two threads both try a shutdown sequence which creates a race to the
de-init/free of certain resources.
  
This exists in similar form in the client as 17926: "mysql.exe crashes
when ctrl-c is pressed in windows."

Update after merge to 5.0

BUG#18669: Session COM_STATISTICS breaks mysqladmin status.
Changed COM_STATISTICS to display the global status, instead of thead status, for slow queries and table opens.

- In function 'handle_grant_struct' when searching the memory structures for an 
  entry to modify, convert all entries here host.hostname is NULL to "" and compare that 
  with the host passed in argument "user_from".
- A user created with hostname "" is stored in "mysql.user" table as host="" but when loaded into 
  memory it'll be stored as host.hostname NULL. Specifiying "" as hostname means
  that "any host" can connect. Thus is's correct to turn on allow_all_hosts
  when such a user is found. 
- Review and fix other places where host.hostname may be NULL.

BUG#19394 OPT_INNODB_THREAD_CONCURRENCY duplicated
Removed duplication (not a user-visible change)

1 files changed, 7 insertions, 2 deletions

diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index b1b68093d17..56c3b1857a8 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -1081,7 +1081,11 @@ static void __cdecl kill_server(int sig_ptr)
   my_thread_init();				// If this is a new thread
 #endif
   close_connections();
-  if (sig != MYSQL_KILL_SIGNAL && sig != 0)
+  if (sig != MYSQL_KILL_SIGNAL &&
+#ifdef __WIN__
+      sig != SIGINT &&				/* Bug#18235 */
+#endif
+      sig != 0)
     unireg_abort(1);				/* purecov: inspected */
   else
     unireg_end();
@@ -4754,6 +4758,7 @@ enum options_mysqld
   OPT_INNODB_FILE_IO_THREADS,
   OPT_INNODB_LOCK_WAIT_TIMEOUT,
   OPT_INNODB_THREAD_CONCURRENCY,
+  OPT_INNODB_COMMIT_CONCURRENCY,
   OPT_INNODB_FORCE_RECOVERY,
   OPT_INNODB_STATUS_FILE,
   OPT_INNODB_MAX_DIRTY_PAGES_PCT,
@@ -5809,7 +5814,7 @@ log and this option does nothing anymore.",
    (gptr*) &innobase_buffer_pool_size, (gptr*) &innobase_buffer_pool_size, 0,
    GET_LL, REQUIRED_ARG, 8*1024*1024L, 1024*1024L, LONGLONG_MAX, 0,
    1024*1024L, 0},
-  {"innodb_commit_concurrency", OPT_INNODB_THREAD_CONCURRENCY,
+  {"innodb_commit_concurrency", OPT_INNODB_COMMIT_CONCURRENCY,
    "Helps in performance tuning in heavily concurrent environments.",
    (gptr*) &srv_commit_concurrency, (gptr*) &srv_commit_concurrency,
    0, GET_LONG, REQUIRED_ARG, 0, 0, 1000, 0, 1, 0},