Isabelle2018: new "op x" syntax; now is "(x)"

(result of "isabelle update_op -m <dir>")

ainvs: Add itcb_arch to the itcb projection

This allows us to more easily show that arch specific tcb fields are
preserved by many functions of the spec. For ARM_HYP we add a
projection for the tcb_vcpu field.

arm-hyp: ioportcontrol: fixes after adding IOPortControlCaps to x64

Proof update for crunch changes

Initial proof updates for combinator changes.

Genericise deletion actions that occur after empty_slot

This patch adds a generic "post_cap_deletion" step that is called by
finalise_slot. Previous to this, the only caps which had actions
required at this stage were IRQHandlerCaps -- it was required that the
IRQ bitmap be updated after the cap itself was removed (as the
invariants state that for any existing IRQHandlerCap, the corresponding
bit in the IRQ bitmap must be set).

By genericising this, we add the capacity for new, arch-specific post
cap deletion actions to occur in the future.

Remove valid_arch_objs

now that we have valid_vspace_objs to express validiy of
vspace objects, we do not need valid_arch_objs: we have
valid_objs to state the validity of non-vspace arch objects.

ainvs: integrate all architectures

arm-hyp invariants: ArchCNodeInv_AI done

arm-hyp invariants: new liveness definition

* the definition of liveness is extended for tcb/vcpu reference
* proved liveness related properties for dissociate_vcpu_tcb, prepare_thread_delete, etc.

arm-hyp invariants: more fixes for crunches and sorries

* passes quick_and_dirty test but needs a bit more work

changes after rebasing (for isabelle2016-1 and the new wp)

arch_splitting, fixing sorries, some more invariants

arm-hyp invariants: fix arch_splitting/locales

* tcb_arch_ref: definition and invariants (to access obj_refs in tcb_arch in generic contexts)
* fixes related hyp_refs

arm-hyp invariants: incremental progress (sorrying, fixing crunches/alignments, etc.)

* sorry perform_vcpu_invocation invariant statements
* fix pg_entry_align and related statements
* some crunches in ArchFinalise_AI

arm-hyp invariants: changes from rebase for ARM_HYP invariants

arm-hyp invariants: updates for vcpu, alignments, valid_vspace_obj, wellformed_arch_obj, etc.

arm-hyp invariants: copy arch-splitted invariant files from ARM

earlier updates in ArchInvariants are kept

arm-hyp invariants: add ARM_HYP directory, updating ArchInvariants_AI and Invariants_AI