Add @hide for org.hamcrest.internal.
Add @hide for org.hamcrest.internal.

Bug 10749552

Change-Id: I6ad7b51709ec080bdde53f8b8857eff3ec8b9817

geekboxzone/mmallow_external_hamcrest,android-ia/platform_external_hamcrest,Omegaphora/external_hamcrest,Omegaphora/external_hamcrest,geekboxzone/mmallow_external_hamcrest,Oi-Android/external_hamcrest,Oi-Android/external_hamcrest,android-ia/platform_external_hamcrest