prevent new more than one Resources for system

MIUI-28807

Change-Id: I6fe0aa51955534264d619289044aead496d83d6e
Signed-off-by: mochangming <mochangming@xiaomi.com>

Conflicts:

	framework.jar.out/smali/android/content/res/Resources.smali
Add code in zygote to suppport network firewall.

MIUI-28912

Change-Id: If5b1c1c909f3f3f2d75f6a1f20dcce1ff2fe71db
Signed-off-by: mochangming <mochangming@xiaomi.com>

Conflicts:

	framework.jar.out/smali/com/android/internal/os/ZygoteInit.smali
The 3rd-party app can be deleted directlly even register as device manager.

MIUI-29021

Change-Id: If43cb76d9d7e37d6dcc2f710d928076eac577e30
Signed-off-by: mochangming <mochangming@xiaomi.com>

Conflicts:

	services.jar.out/smali/com/android/server/pm/PackageManagerService.smali