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.

     1

Ancestors of 5

     2

4 2 0 

     3

Ancestors of 6 and 5

     4

3 4 2 1 0 

     5

Ancestors of 5 and 4

     6

4 2 0 

     7

Ancestors of 7, stop at 6

     8

6 

     9

Ancestors of 7, including revs

    10

7 6 5 3 4 2 1 0 

    11

Ancestors of 7, 5 and 3, including revs

    12

7 5 3 6 4 2 1 0 

    13

    14

Descendants of 5

    15

7 8 

    16

Descendants of 5 and 3

    17

6 7 8 

    18

Descendants of 5 and 4

    19

5 7 8