the build breaks with gcc4:

cc1: warnings being treated as errors
ephy-actions-extension.c: In function 'ephy_actions_extension_init':
ephy-actions-extension.c:202: warning: pointer targets in passing argument 3 of
'ephy_node_db_load_from_file' differ in signedness
ephy-actions-extension.c:202: warning: pointer targets in passing argument 4 of
'ephy_node_db_load_from_file' differ in signedness
ephy-actions-extension.c: In function 'ephy_actions_extension_save_actions':
ephy-actions-extension.c:235: warning: pointer targets in passing argument 2 of
'ephy_node_db_write_to_xml_safe' differ in signedness
ephy-actions-extension.c:235: warning: pointer targets in passing argument 3 of
'ephy_node_db_write_to_xml_safe' differ in signedness
ephy-actions-extension.c:235: warning: pointer targets in passing argument 4 of
'ephy_node_db_write_to_xml_safe' differ in signedness