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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#!/usr/bin/env python

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__doc__ = """Same as `echo a >> b`, but ensures a changed mtime of b.

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Without this svn will not detect workspace changes."""

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import sys, os

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text = sys.argv[1]

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fname = sys.argv[2]

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f = open(fname, "ab")

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try:

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    before = os.fstat(f.fileno()).st_mtime

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    f.write(text)

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    f.write("\n")

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finally:

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    f.close()

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inc = 1

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now = os.stat(fname).st_mtime

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while now == before:

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    t = now + inc

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    inc += 1

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    os.utime(fname, (t, t))

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    now = os.stat(fname).st_mtime

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