merge with crew-stable

raise util.Abort again if specified revision is not an integer. This was changed to NoRepo in 462cc56d898f, because specifying non-integer revisions for e.g. the Mercurial backend caused Abort to be raised in the subversion importer. Now util.Abort is raised again, but the check is done after verifying if it really is a subversion repository.

debugsvnlog call had too many quotes (found by Edouard Gomez)

Remove trailing spaces, fix indentation

merge with crew-stable

Removed debug print from convert/subversion.py

Replace _ with inst for catching exceptions to not shadow gettext. And removed one _(...) because mercurial.i18n is not yet imported in convert/subversion.py.

Move debugsvnlog to subversion module.

convert: Use debugsvnlog instead of git-like debug-svn-log.

extdiff: do single file diffs from the wc with no copy Extdiff was always making a temporary directory and copying files even when not required. This change makes extdiff avoid the copy when diffing a single file that lives in the wc. This lets external diff tools edit the working copy file directly. It also lets other extensions resuse the functions in extdiff and get in-place diffs.

extdiff: made it less chatty in non-verbose mode Made the status info only display in verbose mode since most hg commands aren't so chatty. This also makes it cleaner for other extensions to call extdiff.

extdiff: un-nested two functions The functions in extdiff that create temporary repo copies for are useful in other extensions, so the change moves them at the module level.