Bob/constant

* wip

* remove ndarray dependency from ParameterizedTensorView

* get rid of operator= on ParameterizedTensorView

* remove unimplemented ctor

* remove get_parameterized_tensor_view from TensorView class

* cleanup

* the patient will get worse before getting better. remove ParameterizedTensorView from element type

* cleanup obsolete includes

* remove unused file

* move aligned_buffer and cleanup

* cleanup

* wip

* wip

* wip

* cleanup

* cleanup

* wip

* finally got rid of getting a non-const vector from PTV

* wips

* wip

* remove unused

* fix PR comments

Argon codegen small fixes (get_instance_id for function and install LLVM)

CPU: Minor fixes

Bob/static compiler

CMake: Avoid exporting symbols from static archives that the

NGraph DSO links to privately

With this change, the unit tests need to link against LLVM and Clang
directly since NGraph no longer exports those symbols.