#90 fix race conditions in tests that cause sporadic test failures

mysql-test/suite/tokudb/t/i_s_tokudb_lock_waits_released.test

@@ -27,6 +27,7 @@ send insert into t values (1);
 
 # should find the presence of a lock on 1st transaction
 connection default;
+real_sleep 1; # give some time for conn_b to block
 replace_column 1 TRX_ID 2 MYSQL_ID; 
 select * from information_schema.tokudb_locks;
 

mysql-test/suite/tokudb/t/i_s_tokudb_lock_waits_timeout.test

@@ -24,6 +24,7 @@ send insert into t values (1);
 
 # should find the presence of a lock on 1st transaction
 connection default;
+real_sleep 1; # give some time for conn_b to get blocked
 replace_column 1 TRX_ID 2 MYSQL_ID; 
 select * from information_schema.tokudb_locks;
 

mysql-test/suite/tokudb/t/i_s_tokudb_locks_released.test

@@ -30,6 +30,7 @@ send insert into t values (1);
 
 # should find the presence of a lock on 2nd transaction
 connection default;
+real_sleep 1; # give some time for conn_b to get blocked
 replace_column 1 TRX_ID 2 MYSQL_ID;
 eval select * from information_schema.tokudb_locks;