Support returning 512 and 511 pages for the buffer pool size, this
is undeterministic and probably depends on alignment issues.
The default buffer pool size is 8M (512) pages, which is set in
include/default_mysqld.cnf. So the previous "replace_result 8192 8191"
had no effect.
Extract part of innodb.innodb into innodb.innodb_misc1
This is needed in order to be able to more easily debug this test,
under valgrind, it is too huge.