add shadow recursive user mappings for doing vtophys in user space
fix kernel compile
add passthrough device to build
need ukern specific version of vmparam.h constants
actually its pmap constants we need to change
 restore some of the pci probe code
remove inapplicable asserts and change pmap_pde_to_pte to vtopte since we don't have a direct map
update work status
 keep backup of makefile with acpi in case we ever need it
dynamically generate assym.s
set environment variables needed in my testing
add support for iomem operations
remove acpi and add auto-generation of assym.s