Add simple java-run.sh script for Java hello program.

hello/java-run.sh

@@ -0,0 +1,19 @@
+#! /bin/bash
+
+if [ $# -lt 1 ]
+then
+    1>&2 echo "usage: `basename $0` <output-file> [ cmd line args for Java program ]"
+    exit 1
+fi
+
+source ../env.sh
+
+OUTP="$1"
+shift
+
+# Use a small limit to avoid using lots of memory.  It makes the
+# garbage collector collect more often, but the extra CPU time is not
+# much.
+MAX_HEAP_MB=16
+
+../bin/measureproc ${MP_COMMON_ARGS} ${MP_ARGS_FOR_JVM_RUN} --output "${OUTP}" "${JAVA}" ${JAVA_PROFILING} -server -Xmx${MAX_HEAP_MB}m -classpath ./obj/java hello "$@"