Made namespace_repo_t and base_namespace_repo_t not be templatized.
Made namespaces_directory_metadata_t unprotocolized.
Deprotocolized file_based_svs_by_namespace_t.
Deprotocolized reactor_driver_t.
Deprotocolized namespace_interface_t.

Unfortunately, that is a base class.  So all of the subclasses were deprotocolized,
and read_t and write_t, and their helper types, were moved outside of
rdb_protocol_t.
Removed rdb_protocol_context_t name, using rdb_context_t everywhere.
Deprotocolized namespace_semilattice_metadata_t.
Deprotocolized svs_by_namespace_t and stores_lifetimer_t.
Deprotocolized reactor_t.
Deprotocolized blueprint_t and persistable_blueprint_t.
Deprotocolized reactor_business_card_t.
Made other reactor business card helper types be deprotocolized.
Deprotocolized nonoverlapping_regions_t.
Deprotocolized persistent_branch_history_manager_t.
Moved btree_store.hpp into the rdb_protocol directory, in preparation for deprotocolization.
Moved store_t out of and below rdb_protocol_t.
Moved store_t to rdb_protocol/store.hpp.
Deprotocolized btree_store_t.
Merge branch 'sam_803_dummy' into sam_803_detemplatize
Fixed some surprise build errors (after merging, or thanks to a bad make file?)