ART: Use TMPDIR for test directories

Bug: 16499668
Change-Id: I0d3db4697ef7b1706807e7daa5e000bb89df14e0
diff --git a/test/run-test b/test/run-test
index aef7c52..ca7e68c 100755
--- a/test/run-test
+++ b/test/run-test
@@ -33,7 +33,11 @@
 progdir=`pwd`
 prog="${progdir}"/`basename "${prog}"`
 test_dir="test-$$"
-tmp_dir="/tmp/$USER/${test_dir}"
+if [ -z "$TMPDIR" ]; then
+  tmp_dir="/tmp/$USER/${test_dir}"
+else
+  tmp_dir="${TMPDIR}/$USER/${test_dir}"
+fi
 
 export JAVA="java"
 export JAVAC="javac -g"