Add a script to run native tests

This script saves your time to remember how to build and run
native unittests for LatinIME.

BUG: 13754552
Change-Id: I98398648f0eb0a0100a8729df26f71d53b54c5e3

native/jni/run-tests.sh

+#!/bin/bash
+# Copyright 2014, The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if [[ $(type -t mmm) != function ]]; then
+echo "Usage:" 1>&2
+echo "    source $0" 1>&2
+echo "  or" 1>&2
+echo "    . $0" 1>&2
+exit 1
+fi
+
+pushd $PWD > /dev/null
+cd $(gettop)
+mmm -j16 packages/inputmethods/LatinIME/native/jni || \
+    make -j16 liblatinime_host_unittests
+${ANDROID_HOST_OUT}/bin/liblatinime_host_unittests
+popd > /dev/null
\ No newline at end of file