Remove calls to getCallsign() in bin/repository scripts
Summary:
Ref T4245. Prepare these scripts for a callsign-free world. This also makes them more flexible and easier to use.
The following are now valid ways to identify a repository for these scripts: ID (`3`), PHID (`PHID-REPO-wxyz`), R<ID> (`R3`), r<CALLSIGN> (`rSKYNET`), CALLSIGN (`SKYNET`).
In the future, a human-readable label (`skynet`) may also become valid.
Test Plan:
- Ran `bin/repository reparse --all ...` with `rX`, `X`, `3`, `R3`.
- Ran `bin/repository reparse --change ...` with `rXaaa`, including short versions.
- Ran `bin/repository update ...` with `rX`, `X`, `3`, `R3`.
- Ran `bin/repository refs ...` with various identifiers.
- Ran `bin/repository pull ...` with various identifiers.
- Ran `bin/repository mirror ...` with various identifiers.
- Ran `bin/repository mark-imported ...` with various identifiers.
- Ran `bin/repository list`.
- Ran `bin/repository importing ...` with various identifiers and examined output.
- Ran `bin/repository edit ...` with various identifiers.
- Ran `bin/repository discover ...` with various identifiers.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T4245
Differential Revision: https://secure.phabricator.com/D14924