Moved the test data to their own package.

This allows us to select the whole package for binary inclusion
in adt-test (which doesn't automatically take any non java file for
packaging)

Change-Id: Idc3d3b2f27623de1b0fccd7e01dd88948923081c

tools/eclipse/plugins/com.android.ide.eclipse.tests/build.properties

@@ -10,4 +10,6 @@ bin.includes = META-INF/,\
                unittests/data/,\
                sdklib.jar,\
                layoutlib_api.jar,\
-               layoutlib.jar
+               layoutlib.jar,\
+               unittests/com/android/sdklib/testdata/,\
+               unittests/com/android/layoutlib/testdata/