Move seinfo and install-time changes to inside PMS.

Per request by Google, move the install-time checks entirely
inside PMS.

Change-Id: I01f2a9084dfe7886087b1497070b0d7f2ad8479e

Conflicts:
	services/java/com/android/server/DevicePolicyManagerService.java
	services/java/com/android/server/pm/PackageManagerService.java

Conflicts:
	core/java/android/content/pm/SELinuxMMAC.java
	core/java/android/content/res/PackageRedirectionMap.aidl
	core/tests/coretests/apks/mmac_install_platform/AndroidManifest.xml
	core/tests/coretests/apks/mmac_install_platform/src/com/android/frameworks/coretests/DoNothing.java
	packages/SystemUI/res/drawable/ic_recents_clear.xml
	services/java/com/android/server/pm/PackageManagerService.java
	services/tests/servicestests/apks/mmac_install_media/AndroidManifest.xml
	services/tests/servicestests/apks/mmac_install_platform/Android.mk
	services/tests/servicestests/apks/mmac_install_platform/src/com/android/frameworks/servicestests/DoNothing.java