hg: jdk7/awt/jdk: 6744609: Disable MMX support when building libpng library

[martinrb at google.com]

Changeset: 31a7769b5fd1
Author:    martin
Date:      2008-09-08 17:26 -0700
URL:       http://hg.openjdk.java.net/jdk7/awt/jdk/rev/31a7769b5fd1

6744609: Disable MMX support when building libpng library
Summary: Define -DPNG_NO_MMX_CODE unconditionally, not just on 64-bit Linux
Reviewed-by: anthony, art

! make/sun/splashscreen/Makefile