repoview: make propertycache.setcache compatible with repoview Propertycache used standard attribute assignment. In the repoview case, this assignment was forwarded to the unfiltered repo. This result in: (1) unfiltered repo got a potentially wrong cache value, (2) repoview never reused the cached value. This patch replaces the standard attribute assignment by an assignment to `objc.__dict__` which will bypass the `repoview.__setattr__`. This will not affects other `propertycache` users and it is actually closer to the semantic we need. The interaction of `propertycache` and `repoview` are now tested in a python test file.

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  $ "$TESTDIR/hghave" inotify || exit 80

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  $ hg init

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  $ echo "[extensions]" > .hg/hgrc

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  $ echo "inotify=" >> .hg/hgrc

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  $ hg inserve -d --pid-file .hg/inotify.pid

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  $ echo a > a

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  $ hg ci -Aqm0

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  $ hg co -q null

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  $ hg co -q

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  $ hg st

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  $ cat a

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  a

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  $ "$TESTDIR/killdaemons.py" .hg/inotify.pid