i18n: merge with stable

i18n-da: synchronize with 5dac0d04b838

i18n-de: translated strings for the purge extension

merge with stable

https: warn when server certificate isn't verified Mercurial will verify HTTPS server certificates if web.cacerts is configured, but it will by default silently not verify any certificates. We now warn the user that when the certificate isn't verified she won't get the security she might expect from https: warning: localhost certificate not verified (check web.cacerts config setting) Self-signed certificates can be accepted silently by configuring web.cacerts to point to a suitable certificate file.

merge: document some internal return values.

check-code: catch os.path.relpath

check-code: catch "except as"

tests: eliminate fast-forward merge in test-tag

merge: fast-forward merge with descendant issue2538 gives a case where a changeset is merged with its child (which is on another branch), and to my surprise the result is a real merge with two parents, not just a "fast forward" "merge" with only the child as parent. That is essentially the same as issue619. Is the existing behaviour as intended and correct? Or is the following fix correct? Some extra "created new head" pops up with this fix, but it seems to me like they could be considered correct. The old branch head has been superseeded by changes on the other branch, and when the changes on the other branch is merged back to the branch it will introduce a new head not directly related to the previous branch head. (I guess the intention with existing behaviour could be to ensure that the changesets on the branch are directly connected and that no new heads pops up on merges.)