caches: preserve permissions of top-level .hg
When using hg on a shared filesystem on UNIX, cache files normally
inherit the permissions of the .hg directory. This is most commonly used
to ensure everything is writable by all users. The sqlite3 cache files
don't have a way to directly set the permission, so check if a special
mode is necessary and try to apply them to newly created database files.
syntax: re
/figures/[^/]+\.png$
^html/
\.pyc$
~$
\.swp$
\.orig$
\.rej$
^tests/.*\.err$
^tests/easy_run.sh$
^build/
^dist/
^MANIFEST$
^docs/tutorials/.*\.rst$
\.ico$
tests/\.testtimes
^docs/training/graphs/
^docs/training/html/
^docs/training/index.html
^docs/training/graphviz-images/
^docs/training/img/
^docs/training/output/
^docs/training/pandocfilters/