localrepo: show indeterminate progress for incoming data This has some quirks, like showing progress bars for importing bundles, including during rebase.

Merge with crew-stable

convert: differentiate between IOError and OSError on commitctx() The IOError exception is overloaded to mean 'this file was deleted in the current commit'. Separate the code that handles IOError and file deletion from general OSError exceptions. The latter are real errors, but IOError is not always a throwable error. This solves the accidental marking of files as 'deleted' in commits that try to write for example in .hg/store/data revlogs that the current user has no permission to modify (a normal OSError that should abort the current commit). Changed by pmezard: use getattr() to be on the safe side.

test-mq-qclone: test --mq option

merge with crew

ui.progress: clarify termination requirement

relink: properly use the progress API

test-subrepo-svn: handle svn output changes gracefully

util: fix trailing whitespace found by check-code

ui: look before you leap on sys.stderr.closed (and look nicer) f83291e5643e introduced a fix if sys.stdout.closed does not exist. This change uses a getattr with default instead of hasattr (which just calls getattr) and accessing the attribute. Additionally it applies the same fix for sys.stderr.closed as this is not available in the bpython shell (reported by Roger Gammans).