obslog: use unfiltered repo for --no-graph implementation too repo.unfiltered() is used for graph version of obslog, because if we want to filter non-local changesets, we only have to provide --filternonlocal flag on the command line and _nodesandmarkers() will handle filtering. But that means for obslog without -f to work correctly we need to provide unfiltered repo to that function. With this patch both implementations of obslog (--graph and --no-graph) see the same repo.

tests: don't assume that echo will unescape \\

tests: avoid non-portable sed command sed -i is a GNU extension and the i command without newline as well. Just create the file from scratch with printf to side-step the issue.

tests: check for file existance in a portable way The precise output of ls is highly OS specific, so just use the simpler test command.

tests: deal with "ls" vs "ls -A" difference on 2BSD derived systems ls on 2BSD derived systems historically defaults to -A for root, so use it unconditionally for consistent results.

tests: silence potential warnings about uname -o The option is not supported on the BSDs, but also not relevant as it is only used to detect msys.

evolve: remove unused divergenceflag and splitflag of MultipleSuccessorsError