spelling: dependent

spelling: Failing

spelling: Explicitly

spelling: Environment

spelling: Construct

spelling: Authoritative

amend: add obsolete support If the obsolete feature is enabled, `hg commit --amend` marks a changeset as obsolete instead of stripping it.

obsolete: add a high level function to create an obsolete marker This function is designed to be used by all code that creates new obsolete markers in the local repository. It is not used by debugobsolete because debugobsolete allows the use of an unknown hash as argument.