It is now possible to return a reference to the current inherit in this object.
The third argument to program_magic_identifier() should now be -1 when no inherit has been specified (0 is now reserved for referring to the current inherit).
This is also reflected in the F_THIS node.
The F_THIS opcode is now used exclusively to refer to specific inherits.
Use the F_THIS_OBJECT opcode to refer to the current object.