Fix mysql-test-run.pl so that mysql_client_test works in a CMake build tree.

mysql-test/mysql-test-run.pl:
  Also look for the mysql_test_run binary in the places where it is put
  by CMake builds.

mysql-test/mysql-test-run.pl

@@ -1075,6 +1075,8 @@ sub executable_setup () {
       }
       $exe_mysql_client_test=
         mtr_exe_exists("$glob_basedir/tests/mysql_client_test",
+                       "$glob_basedir/tests/release/mysql_client_test",
+                       "$glob_basedir/tests/debug/mysql_client_test",
                        "$path_client_bindir/mysql_client_test",
 		       "/usr/bin/false");
     }
@@ -1138,6 +1140,8 @@ sub executable_setup () {
       $exe_mysqltest= mtr_exe_exists("$path_client_bindir/mysqltest");
       $exe_mysql_client_test=
         mtr_exe_exists("$path_client_bindir/mysql_client_test",
+                       "$glob_basedir/tests/release/mysql_client_test",
+                       "$glob_basedir/tests/debug/mysql_client_test",
 		       "/usr/bin/false"); # FIXME temporary
     }