nsf.c: * provide debug-refcounts for "class.activationCount" * provide debug-refcounts for "object.activationCount" * deactivated CHECK_ACTIVATION_COUNTS oer default * tested refcounts with Tcl 8.6b2, found bug in Tcl 8.6b2 and submitted patch to sourceforge
- nsf.c: * refined refcounting debugging * fixed various refcounting bugs, especially in error cases. * added explicit INCR_REF_COUNTs on Tcl_Objs with 0-refCount to ease debugging