transactions: convert changes['phases'] to list of ranges Consecutive revisions are often in the same phase, especially public revisions. This means that a dictionary keyed by the revision for the phase transitions is highly redundant. Build a list of (range, (old, new)) entries instead and aggressively merge ranges with the same transition. For the test case in issue5691, this reduces memory use by ~20MB. Differential Revision: https://phab.mercurial-scm.org/D8125

test-install: don't print Rust re2 bindings information if Rust is not in use Differential Revision: https://phab.mercurial-scm.org/D8273

tests: drop an extraneous (glob) from test-debugbackupbundle.t Since this was not needed, it ends up causing the test to end with an error saying that the output changed, but with no diff and a message at the end saying "no result code from test". Differential Revision: https://phab.mercurial-scm.org/D8269