- Add inttypes.h and stdint.h in lieu of int_limits.h from NetBSD
- Use #include "h_macros.h" instead of relative path analog

Sponsored by: EMC / Isilon Storage Division
- Mark signo __unused in the signal handler function
- Effectively #if 0 out some code that does not fail on FreeBSD

In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division