Always supply matching -source and -target to javac.

Change-Id: I74954e78ccd11b3458113387b297714004fc03be
diff --git a/test/run-test b/test/run-test
index c404491..2985815 100755
--- a/test/run-test
+++ b/test/run-test
@@ -36,7 +36,7 @@
 tmp_dir="/tmp/${test_dir}"
 
 export JAVA="java"
-export JAVAC="javac -g -target 1.5"
+export JAVAC="javac -g -source 1.5 -target 1.5"
 export RUN="${progdir}/etc/push-and-run-test-jar"
 export DEX_LOCATION=/data/run-test/${test_dir}
 export NEED_DEX="true"