Add dependency checks for Subversion.

Review Request #12553 — Created Aug. 18, 2022 and submitted — Latest diff uploaded

Information

RBTools
release-4.x

Reviewers

This updates SVNClient to add formal support for dependency checks.
SVNClient.check_dependencies() now determines if svn is installed.

SVNClient.get_local_path(), SVNClient.get_repository_info(), and
SVNClient.is_remote_only() now call this instead of checking for
dependencies themselves, emitting a warning if dependencies haven't
already been checked via setup() or has_dependencies().

Unit tests have been updated to test the dependency checks. With the new
auto-test skipping, individual tests will be skipped if svn isn't
installed, but tests that don't require svn will continue to run.

Unit tests pass on Python 3.7-3.11.

Commits

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