Merge "printf unification: floating point." am: a198c71752

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2583717

Change-Id: Iea67828c78b76749c5c94ae27642b63c89f09bf1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>