Add empty line for consistency
Add regress coverage for obj_dat.c r1.52
Convert from %i to %d
Test OBJ_obj2txt() with NULL and short buffers.
Add test coverage for OBJ_txt2obj()/OBJ_obj2txt() with no_name == 0.
Revise for OBJ_obj2txt() OID arc limits.
Test OBJ_obj2nid() with an undefined (NID_undef) object.
Add initial regress for objects.