Update libpng to 1.2.38 to patch a minor security issue.
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
index 338d49d..95342b8 100644
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -3,12 +3,15 @@
# Contributed by William L. Sebok, based on makefile.linux
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
-# For conditions of distribution and use, see copyright notice in png.h
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
-PNGMIN = 1.2.35
+PNGMIN = 1.2.38
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: