Merge "pm install: clarify when --multi-package can be used" am: 1004623b am: 5a07f149 am: 98fd11db am: 10dba27f am: 1172caf3

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2015636

Change-Id: I021e2e796b055b4e8f7d7b6a10cf574021d2d297