Use exportVar function in nacl_make

Dumps out the variables as they are defined for debugging
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R=djsollen@google.com

Review URL: https://codereview.chromium.org/14655006

git-svn-id: http://skia.googlecode.com/svn/trunk@9010 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed