Minor change.

Change rpm cpu architecture name to x86_64 (it was amd64).
Keep amd64 for deb package to avoid dpkg complains about non-supported architecture.

CMakeLists.txt

@@ -904,7 +904,7 @@ set(CPACK_RPM_PACKAGE_URL ${CPACK_PACKAGE_URL} )
 				SET(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_FILE_NAME}-x86_64")
 			endif()
 			SET(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")
-			SET(CPACK_RPM_PACKAGE_ARCHITECTURE "amd64")
+			SET(CPACK_RPM_PACKAGE_ARCHITECTURE "x86_64")
 		ENDIF(CMAKE_SIZEOF_VOID_P MATCHES "4")
 		SET(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "${CPACK_PACKAGE_FILE_NAME}")
 		# Set post installation scripts for RPM and DEB packages