Makes analyzer always output static_libraries that have changed

test/analyzer/static_library_test.gyp

+# Copyright 2015 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# These gyp files create the following dependencies:
+#
+# test.gyp:
+#   #a -> b
+#     a.c
+#   #b
+#     b.c
+#  a and b are static libraries.
+
+{
+  'targets': [
+    {
+      'target_name': 'a',
+      'type': 'static_library',
+      'sources': [
+        'a.c',
+      ],
+      'dependencies': [
+        'b',
+      ],
+    },
+    {
+      'target_name': 'b',
+      'type': 'static_library',
+      'sources': [
+        'b.c',
+      ],
+    },
+  ],
+}