Merge "Make tmpfile() respect $TMPDIR." am: 17b2bae190 am: 4260d4d7eb

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2545855

Change-Id: Ic16a8ef4cb1e8c3e80e0bf5f57f0999af156dfda
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>