Proposed mmap module modifications

[Tim Peters]

[Jay T Miller]
> I am proposing a set of modifications to the mmap module ...

Cool.  mmap could sure benefit from some loving attention.  So long as you
don't change the meaning of existing code, there's no need for a PEP here,
unless you want a document to focus discussion.  Else backward-compatible
improvements to the libraries can be handled via patches (which need to
include code, doc and test suite changes).

anticipatorily y'rs  - tim