convert: load parent commits on-demand

convert: wrap cached commits author remapping

Merge with -stable

match: handle large regexes Some Python versions don't handle large regexes, so when we hit an overflow, split our regex in two.

path_auditor: cache names of audited directories We use a separate cache to avoid problems with audit = path_auditor(repo.root) audit("subrepo") audit("subrepo/file") whitelisting "subrepo" (which is fine) and then using the same whitelist with "subrepo/file" (which is not fine). Since we create a separate path_auditor for every path on the command line, a "hg add dir/a dir/b dir/c" will still lstat dir 3 times just to audit the paths.

Quote ^ and ~ chars in test-parentrevspec. At least ^ causes problems on some sh implementations.

Remove demandimport.enable from dispatch.py

Enable demandimport only in scripts, not in importable modules (issue605) This way other applications can choose if and when they want this feature, because it might be problematic if those applications rely on ImportError.