Fix for bug#39108: Set global wait timeout within the test, not more via opt file.

Deleted the opt file. Replaced the sleeps by wait condition. Made some beautyfications.
Inserted review results.   

mysql-test/r/wait_timeout.result

-select 0;
-0
-0
-flush status;
-select 1;
+SET @@global.wait_timeout= 2;
+disconnect default;
+connection wait_con;
+connection default;
+--disable_reconnect;
+SELECT 1;
 1
 1
-select 2;
+connection wait_con;
+connection default;
+SELECT 2;
 Got one of the listed errors
-select 3;
+--enable_reconnect;
+SELECT 3;
 3
 3
-select 1;
+disconnection default;
+connection wait_con;
+connection con1;
+--disable_reconnect;
+SELECT 1;
 1
 1
-select 2;
+connection wait_con;
+connection con1;
+SELECT 2;
 Got one of the listed errors
-select 3;
+--enable_reconnect;
+SELECT 3;
 3
 3
+SET @@global.wait_timeout= <start_value>;
+disconnection con1;

mysql-test/t/wait_timeout-master.opt

---wait-timeout=1

mysql-test/t/wait_timeout.test

-# This tests not performed with embedded server
+# Last modification:
+# 2009-01-19 H.Hunger Fix Bug#39108 main.wait_timeout fails sporadically
+#                       - Increase wait timeout to 2 seconds
+#                       - Eliminated the corresponding opt file,
+#                         set global wait timeout within the test.
+#                       - Replaced sleeps by wait condition
+#                       - Minor improvements
+###############################################################################
+# These tests cannot run with the embedded server
 -- source include/not_embedded.inc
 -- source include/one_thread_per_connection.inc
 
 #
-# Bug #8731: wait_timeout does not work on Mac OS X
+# Bug#8731: wait_timeout does not work on Mac OS X
 #
 
+let $start_value= `SELECT @@global.wait_timeout`;
+SET @@global.wait_timeout= 2;
+--echo disconnect default;
+disconnect default;
 
 # Connect with another connection and reset counters
 --disable_query_log
 connect (wait_con,localhost,root,,test,,);
+--echo connection wait_con;
 connection wait_con;
-set session wait_timeout=100;
+SET SESSION wait_timeout=100;
 let $retries=300;
-set @aborted_clients= 0;
+SET @aborted_clients= 0;
 --enable_query_log
 
 # Disable reconnect and do the query
+connect (default,localhost,root,,test,,);
+--echo connection default;
 connection default;
-# If slow host (Valgrind...), we may have already timed out here.
-# So force a reconnect if necessary, using a dummy query. And issue a
-# 'flush status' to reset the 'aborted_clients' counter.
---enable_reconnect
-select 0;
-flush status;
+--echo --disable_reconnect;
 --disable_reconnect
-select 1;
+SELECT 1;
 
 # Switch to wait_con and wait until server has aborted the connection
 --disable_query_log
+--echo connection wait_con;
 connection wait_con;
 while (!`select @aborted_clients`)
 {
-  sleep 0.1;
+  real_sleep 0.1;
   let $aborted_clients = `SHOW STATUS LIKE 'aborted_clients'`;
-  eval set @aborted_clients= SUBSTRING('$aborted_clients', 16)+0;
+  eval SET @aborted_clients= SUBSTRING('$aborted_clients', 16)+0;
 
   dec $retries;
   if (!$retries)
@@ -45,44 +56,51 @@ while (!`select @aborted_clients`)
 --enable_query_log
 # The server has disconnected, add small sleep to make sure
 # the disconnect has reached client
-sleep 1;
-
+let $wait_condition= SELECT COUNT(*)=1 FROM information_schema.processlist;
+--source include/wait_condition.inc
+--echo connection default;
 connection default;
 # When the connection is closed in this way, the error code should
-# be consistent see bug#2845 for an explanation
+# be consistent see Bug#2845 for an explanation
 # depending on platform/client, either errno 2006 or 2013 can occur below
 --error 2006,2013
-select 2;
+SELECT 2;
+--echo --enable_reconnect;
 --enable_reconnect
-select 3;
+SELECT 3;
 # Disconnect so that we will not be confused by a future abort from this
 # connection.
+--echo disconnection default;
 disconnect default;
 
 #
 # Do the same test as above on a TCP connection
-# (which we get by specifying a ip adress)
+# (which we get by specifying an ip adress)
 
 # Connect with another connection and reset counters
 --disable_query_log
+--echo connection wait_con;
 connection wait_con;
-flush status; # Reset counters
+FLUSH STATUS; # Reset counters
 let $retries=300;
-set @aborted_clients= 0;
+SET @aborted_clients= 0;
 --enable_query_log
 
+--echo connection con1;
 connect (con1,127.0.0.1,root,,test,$MASTER_MYPORT,);
+--echo --disable_reconnect;
 --disable_reconnect
-select 1;
+SELECT 1;
 
 # Switch to wait_con and wait until server has aborted the connection
 --disable_query_log
+--echo connection wait_con;
 connection wait_con;
 while (!`select @aborted_clients`)
 {
-  sleep 0.1;
+  real_sleep 0.1;
   let $aborted_clients = `SHOW STATUS LIKE 'aborted_clients'`;
-  eval set @aborted_clients= SUBSTRING('$aborted_clients', 16)+0;
+  eval SET @aborted_clients= SUBSTRING('$aborted_clients', 16)+0;
 
   dec $retries;
   if (!$retries)
@@ -93,14 +111,23 @@ while (!`select @aborted_clients`)
 --enable_query_log
 # The server has disconnected, add small sleep to make sure
 # the disconnect has reached client
-sleep 1;
+let $wait_condition= SELECT COUNT(*)=1 FROM information_schema.processlist;
+--source include/wait_condition.inc
 
+--echo connection con1;
 connection con1;
 # When the connection is closed in this way, the error code should
-# be consistent see bug#2845 for an explanation
+# be consistent see Bug#2845 for an explanation
 # depending on platform/client, either errno 2006 or 2013 can occur below
 --error 2006,2013
-select 2;
+SELECT 2;
+--echo --enable_reconnect;
 --enable_reconnect
-select 3;
+SELECT 3;
+--replace_result $start_value <start_value>
+eval SET @@global.wait_timeout= $start_value;
+# ML: The start value might be changed in future ...
+--echo disconnection con1;
 disconnect con1;
+
+