- New ERESOURCE implementation: fixes the return value of some functions (VOID vs...

- Also, the spinlock is not actually acquired on non-SMP builds; instead, interrupts are blocked and unblocked for acquire/release, this optimizes locking.
- Added many asserts and bugcheck scenarios.
- Added thread priority boosting.
- Added some debugging helpers and deadlock detection.
- Added RESOURCE_NOT_OWNED bugcehck message.
* Thanks again to Waxdragon (Andrew) for testing this build.

svn path=/trunk/; revision=20580