Merge pull request #101 from abiggerhammer/master

Make HHashTable resizeable and improve benchmarking output
Added NetBSD and OpenBSD ports
Merge pull request #102 from thequux/ports

Added NetBSD and OpenBSD ports
a first edit of a man page for hammer
replaced man page as asciidoc instead of groff, changed to section 3 man page
add h_with_endianness()
fix h_read_bits path for BYTE_LITTLE_ENDIAN
tab correction
Merge pull request #103 from pesco/77-endian-combinator

implement h_with_endianness combinator
Merge pull request #104 from abiggerhammer/master

change pointer type to uintptr_t for portability
h_put_value and h_get_value done.
merge from upstream