Merge branch 'coremap' into addrspace
fixed bug in define regions (read write), bug in waitpid fixed, vm fault, set valid in page tables. shell starts but crashes on command
Merge branch 'addrspace'
Fixed paging errors in addrspace, bad free_kpages kasserts, and zeroed memory on get_free_page.
Merge branch 'addrspace'
sbrk and coremap bugfix
Growing stack and vm_fault and as_copy set lookup tables.
Merge sbrk into addrspace
Merge sbrk into addrspace
Fixed bugs.
Merge branch 'master' into coremap
Merge branch 'addrspace' into coremap