[RFC/RFT] calloutng

[Davide Italiano]

[trimmed old mails]

Here's a new version of the patch:
http://people.freebsd.org/~davide/patches/calloutng-11022012.diff

Significant bits changed (after wider discussion and suggestion by phk@):
- Introduction of the new sbintime_t type (32.32 fixed point) with the
respective conversion (sbintime2bintime, sbintime2timeval etc...)
- switch from 64.64 (struct bintime) format to measure time to sbintime_t
- Use sbintime_t to represent expected sleep time instead of measuring
it in microseconds (cpu_idle_acpi(), cpu_idle_spin() ...).

Thanks,

Davide