Added an option to deduplicate bindings in favor of Spring

User can set Environment property spring.guice.dedup=true.

src/test/java/org/springframework/guice/AdhocTestSuite.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2012-2015 the original author or authors.
+ *
+ * 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.
+ */
+
+package org.springframework.guice;
+
+import org.junit.Ignore;
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+import org.junit.runners.Suite.SuiteClasses;
+
+import org.springframework.guice.annotation.EnableGuiceModulesTests;
+
+/**
+ * A test suite for probing weird ordering problems in the tests.
+ *
+ * @author Dave Syer
+ */
+@RunWith(Suite.class)
+@SuiteClasses({ BindingDeduplicationTests.class, EnableGuiceModulesTests.class })
+@Ignore
+public class AdhocTestSuite {
+
+}