[devel] Revise references to zlib-libpng license
diff --git a/scripts/smakefile.ppc b/scripts/smakefile.ppc
index 8e6a613..494540e 100644
--- a/scripts/smakefile.ppc
+++ b/scripts/smakefile.ppc
@@ -3,7 +3,8 @@
 # Copyright (C) 1998 by Andreas R. Kleinert
 #
 # This code is released under the zlib-libpng license.
-# For conditions of distribution and use, see copyright notice in png.h
+# For conditions of distribution and use, see copyright notice, disclaimer,
+# and license in png.h
 
 CC       = scppc
 CFLAGS   = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL IDIR /zlib \