Squashed 'external/devlib/' changes from 6249c06b4..80c0e37d1

80c0e37d1 utils/misc: Use an RLock in tls_property
f523afda9 target: Fix deadlock in Target.clear_logcat()
b64ec714a utils/misc: Use RLock for check_output_lock

git-subtree-dir: external/devlib
git-subtree-split: 80c0e37d1129756063ec5883a7e27cd47f9dd8ea