changectx: extract explicit computechangesetfilesremoved method from context Right now, the logic around changeset centric removed files data are buried into the "changectx" code. We extract this code in a dedicated method (in the scmutil module) for clarity. This clarity will help to explicitly compute and caches these data in the future.

changectx: extract explicit computechangesetfilesadded method from context Right now, the logic around changeset centric added files data are buried into the "changectx" code. We extract this code in a dedicated method (in the scmutil module) for clarity. This clarity will help to explicitly compute and caches these data in the future.

demandimport: explicitly declare `_session` at the module level The `_session` module level variable is set within a function using the `global` keyword. This confuses my `test-check-pyflakes.t`. Explicitly declaring the variable at the top level solves the issue (and seems absolutely reasonable).

tests: give more room for slowness in test-run-tests.t The test expected any run-test.py run to end in less than 10 seconds. On slower loaded CI machine, this gets slower than that. We give a bit more room to the regexp.

copies: extract an explicit `computechangesetcopie` method from context Right now, the logic around changeset centric copies data are buried into the "changectx" code. We extract this code in a dedicated method (in the copies module) for clarity. This clarity will help to explicitly compute and caches these data in the future.

config: fix fm.data() handling of defaultvalue This is a follow-up patch to rHG51a2e3102db2. This moves `fm.data()` out of the if block in `commands.config()`. Differential Revision: https://phab.mercurial-scm.org/D6720

config: remove pycompat.bytestr() for defaultvalue This is a follow-up patch to 51a2e3102db2. This removes `pycompat.bytestr` to preserve `None` in `commands.config()`. Differential Revision: https://phab.mercurial-scm.org/D6712