Small fixes done while reviewing pushed code

mysql-test/r/innodb-replace.result:
  Added proper cleanup for test
mysql-test/t/innodb-replace.test:
  Added proper cleanup for test
sql/share/english/errmsg.txt:
  Don't extend the possible length of error message too much for common errors are MySQL 4.0 clients has a limit of 200 characters

mysql-test/t/innodb-replace.test

@@ -2,6 +2,10 @@
 # embedded server ignores 'delayed', so skip this
 -- source include/not_embedded.inc
 
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
 #
 # Bug #1078
 #