wip/or1ksim 0.5.1rc1 NetBSD

Or1ksim is a generic OpenRISC 1000 architecture simulator capable of emulating OpenRISC based computer systems. The goal is to simulate 32-bit and 64-bit OpenRISC CPUs and enough surrounding hardware to fake real machines, capable of running real (unmodified) operating systems, such as NetBSD, RTEMS, eCos and Linux.

Or1ksim provides several unique features:

\* Free, open source code.
\* High level, fast architecture simulation that allows early code
  analysis and system performance evaluation.
\* All major models of OpenCores peripheral and system controller
  cores supportedi.
\* Easy addition of new peripheral models.
\* Remote debugging through a network socket with the GNU Debugger (GDB).
\* Support for different environments (memory configurations and sizes,
  OR1K processor model, configuration of peripheral devices).