Find occurrences of MySQL in test runner and replace with Drizzle names

Take a look at the output of the Drizzle test runner:

[505][jpipes@serialcoder: /home/jpipes/repos/drizzle/trunk/tests]$ ./dtr select
Logging: ./dtr select
<snip>
MySQL Version 7.0.0
Using dynamic switching of binlog format
Using MTR_BUILD_THREAD = 0
Using MASTER_MYPORT = 9306
Using MASTER_MYPORT1 = 9307
Using SLAVE_MYPORT = 9308
Using SLAVE_MYPORT1 = 9309
Using SLAVE_MYPORT2 = 9310
Killing Possible Leftover Processes
Removing Stale Files
Creating Directories
Saving snapshot of installed databases
=======================================================

TEST RESULT TIME (ms)
-------------------------------------------------------

main.select [ pass ] 9673
-------------------------------------------------------
Stopping All Servers
All 1 tests were successful.
The servers were restarted 1 times
Spent 9.673 of 21 seconds executing testcases

Notice the references to MySQL and MY***

Clean this up by editing the tests/test-run.pl and finding occurrences of MySQL. :)