Ref #1506: Move ID types from db to protocol

The ID types, object_id and object_id_type, were defined in the db
library, and the protocol library depends on db to get these types.
Technically, the ID types are defined by the protocol and used by the
database, and not vice versa. Therefore these types should be in the
protocol library, and db should depend on protocol to get them.

This commit makes it so.

libraries/db/CMakeLists.txt

@@ -1,6 +1,6 @@
 file(GLOB HEADERS "include/graphene/db/*.hpp")
 add_library( graphene_db undo_database.cpp index.cpp object_database.cpp ${HEADERS} )
-target_link_libraries( graphene_db fc )
+target_link_libraries( graphene_db graphene_protocol fc )
 target_include_directories( graphene_db PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include" )
 
 install( TARGETS

libraries/db/include/graphene/db/object.hpp

@@ -22,10 +22,10 @@
  * THE SOFTWARE.
  */
 #pragma once
-#include <graphene/db/object_id.hpp>
-#include <boost/multiprecision/integer.hpp>
+#include <graphene/protocol/object_id.hpp>
 #include <fc/io/raw.hpp>
 #include <fc/crypto/city.hpp>
+#include <boost/multiprecision/integer.hpp>
 
 #define MAX_NESTING (200)
 

libraries/protocol/CMakeLists.txt

@@ -41,7 +41,7 @@ list(APPEND SOURCES account.cpp
 
 
 add_library( graphene_protocol ${SOURCES} ${HEADERS} )
-target_link_libraries( graphene_protocol graphene_db fc )
+target_link_libraries( graphene_protocol fc )
 target_include_directories( graphene_protocol PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include" )
 
 install( TARGETS

libraries/protocol/include/graphene/protocol/types.hpp

@@ -46,7 +46,7 @@
 #include <deque>
 #include <cstdint>
 #include <graphene/protocol/address.hpp>
-#include <graphene/db/object_id.hpp>
+#include <graphene/protocol/object_id.hpp>
 #include <graphene/protocol/config.hpp>
 
 #include <boost/rational.hpp>