[server][faceRest] Use a reference for improving performance.
[server][faceRest] Add 'const' for input parameters according to the coding convention.
[server][faceRest] Use a reference for improving performance.
[server][FaceRest] Clean up.
[server][faceRest] Use a reference for improving performance.
[server][FaceRest] Clean up.
[server][FaceRest] Add a comment.
[server][FaceRest] Clean up.
[server][FaceRest] Add a comment.
[server][testUnifiedDataStore] Do the test with the condition that data of defunct servers are filtered.
Merge branch 'issue137'
[server][mlpl][MutexLock] Add a static version of unlock().