py3: redefine "troublecategories" in evolve as a dict
We'll want to the keys to be bytes and the values to be unicode on
py3. Having it defined as a dict makes that easier (instead of
converting between the types with e.g. pycompat.sysbytes()). It was
kind of ugly to convert between the forms by stripping '_' from the
string anyway.
Test that share-clones use the cache in the original repository.
$ . $TESTDIR/testlib/common.sh
$ hg init share-base
$ cd share-base/
$ cat >> .hg/hgrc <<EOF
> [extensions]
> evolve=
> share=
> EOF
$ hg debugbuilddag .+3:branchpoint+4*branchpoint+2
$ cd ..
$ hg --config extensions.share= share -U share-base share-client
$ cd share-client
$ hg debugupdatecache
$ test -d .hg/cache
[1]
$ test -d ../share-base/.hg/cache