- nsf.c: * improved INCR_REF_COUNT/DECR_REF_COUNT for easier tracking of potential refcount errors * added macros DECR_REF_COUNT2() and INCR_REF_COUNT2() for easing the association of refcounts to locations in the code by providing names for refcounts. * fixed a refcount bug for valueObjs in non-NRE-enabled versions in the argument vector of scripted methods (found via INCR_REF_COUNT2/DECR_REF_COUNT2)