- Detect if reparsing is being used during IRP completion and complain.

- Detect if reparsing is being used during IRP completion and complain.
- Free MDLs in a safer way by not actually using the Irp->MdlAddress as we're looping through them.
- Don't leak an event for each Asynchronous API anymore.
- Handle IRP_OB_QUERY_NAME completion properly.
- handle IRP_CREATE_OPERATION with a file object present.
- Use deferred delete for File Object dereferences, to speed up I/O completion.
- Clear the I/O Stack Location when parsing completion stacks.
- Support SL_ERROR_RETURNED during completion routines.

svn path=/trunk/; revision=25993