don't exit, style (is about to start complaining).
Typo
Check for any calls to memory functions in the library, minor re-shuffling
and tradeoffs so things don't slow down.
Turn on buffer alignment and direct I/O, it tests a few more paths and
I think all of our systems support them.
Re-work memory allocation statistis: First, don't count free of a NULL
pointer, we do it all over the place and we're not calling the
underlying memory free function.  Second, separately track the "grow"
calls from the original memory allocation calls.