Add `Cstruct.hexdump_to_buffer` to make spooling hexdump output easier.
Generate `hexdump_foo` and `hexdump_foo_to_buffer` prettyprinting functions for a `cstruct foo`
Merge branch 'master' of github.com:avsm/ocaml-cstruct
fix type names in generates sigs
update README
update CHANGES
Merge pull request #12 from avsm/master

Add hexdumping pretty printing functions