* stable-5.1:
Prepare 5.1.12-SNAPSHOT builds
JGit v5.1.11.201909031202-r
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Iac5dc9683cea97db04d20f27c10f2e103d3ae7b5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>