Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>. This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.
This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
procfs map file when object IDs were eliminated in the mega-commit
that included procfs_map.c revision 1.19.
The map file is a terrible hodge-podge. The fields that are used
mainly for kernel debugging should be moved out of it into a
separate file, so that the interface presented by the map file to
applications can remain stable in the face of VM system changes.
