Use exportVar function in nacl_make
Use exportVar function in nacl_make

Dumps out the variables as they are defined for debugging
(SkipBuildbotRuns)

R=djsollen@google.com

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

git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@9010 2bbb7eff-a529-9590-31e7-b0007b416f81

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