pull: run findcommon incoming on unfiltered repo
The discovery is not yet ready for filtered repo. Pull was using filtered for
its discovery which is wrong. It worked by dumb luck because discovery mainly
use funtion that does not respect the filtering.
Trying to makes discovery work on filtered repo revealed this bug.
hg debuginstall
$ hg debuginstall
checking encoding (ascii)...
checking Python lib (*lib*)... (glob)
checking installed modules (*mercurial)... (glob)
checking templates (*mercurial?templates)... (glob)
checking commit editor...
checking username...
no problems detected
hg debuginstall with no username
$ HGUSER= hg debuginstall
checking encoding (ascii)...
checking Python lib (*lib*)... (glob)
checking installed modules (*mercurial)... (glob)
checking templates (*mercurial?templates)... (glob)
checking commit editor...
checking username...
no username supplied (see "hg help config")
(specify a username in your configuration file)
1 problems detected, please check your install!
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