subrepo: move prompts out of the if (issue5505) Prompts weren't available in the else clause

exchange: use v2 bundles for modern compression engines (issue5506) Previously, `hg bundle zstd` on a non-generaldelta repo would attempt to use a v1 bundle. This would fail because zstd is not supported on v1 bundles. This patch changes the behavior to automatically use a v2 bundle when the user explicitly requests a bundlespec that is a compression engine not supported on v1. If the bundlespec is <engine>-v1, it is still explicitly rejected because that request cannot be fulfilled.

exchange: reject new compression engines for v1 bundles (issue5506) Version 1 bundles only support a fixed set of compression engines. Before this change, we would accept any compression engine for v1 bundles, even those that may not work on v1. This could lead to an error. We define a fixed set of compression engines known to work with v1 bundles and we add checking to ensure a newer engine (like zstd) won't work with v1 bundles. I also took the liberty of adding test coverage for unknown compression names because I noticed we didn't have coverage of it before.

pycompat: verify sys.argv exists before forwarding it (issue5493) ISAPI_WSGI doesn't set up sys.argv, so we have to look for the attribute before assuming it exists.

Added signature for changeset 25703b624d27

Added tag 4.1.1 for changeset 25703b624d27

merge with i18n

i18n-pt_BR: synchronized with 7074589cf22a

i18n-ja: synchronized with 7074589cf22a

worker: flush messages written by child processes before exit I found some child outputs were lost while testing the previous patch. Since os._exit() does nothing special, we need to do that explicitly.