[Eva] In bases, locations, cvalue and lmap: adds function [replace_base].

src/kernel_services/abstract_interp/base.ml

src/kernel_services/abstract_interp/base.mli

src/kernel_services/abstract_interp/lmap.ml

src/kernel_services/abstract_interp/lmap_sig.mli

src/kernel_services/abstract_interp/locations.ml

src/kernel_services/abstract_interp/locations.mli

src/plugins/value_types/cvalue.ml

src/plugins/value_types/cvalue.mli