[vreg] move base registry implementation to logilab.common. Closes #1916014 A new logilab.common.registry module has been created with content from * cw.vreg (the whole things that was in there) * cw.appobject (base selectors and all). In the process, we've done some renaming: * former selector functions are now known as "predicate", though you still use predicates to build an object'selector * hence `objectify_selector` decorator is now `objectify_predicate` * the top level registry is now `RegistryStore` (was `VRegistry`) Also there is no more need for the @lltrace decorator. On the CubicWeb side, the `selectors` module has been renamed to `predicates`. There should be full backward compat with proper deprecation warnings.

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/var/log/cubicweb/*.log {

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        weekly

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        missingok

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        rotate 10

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        compress

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        delaycompress

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        notifempty

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        create 640 root adm

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        sharedscripts

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        postrotate

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           if [ -x /usr/sbin/invoke-rc.d ]; then \

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              invoke-rc.d cubicweb reload > /dev/null 2>&1; \

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           else \

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              /etc/init.d/cubicweb reload > /dev/null 2>&1; \

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           fi; \

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        endscript

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}