Merge "Move M_PURGE to M_PURGE_ALL." am: 345f54666a am: 6206aca550

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2504135

Change-Id: Ia2c9ab188eea34aaff60a37f55bf54d8282d4cc3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>