R1:7db265cd5da5

Parameterize the repository read and write locks

Summary:
Ref T13202. See PHI889. Update the read and write locks to the modern parameterized verison, which handles hashing/normalization and can store better logs.

This parameterized mode was added in D19173 and has been used successfully for some time, but not all locks have switched over to it yet.

Test Plan:
- Added an `fprintf(STDERR, $full_name)` to the lock code.
- Pulled a repository.
- Saw sensible lock name on stdout before "acquired read lock...