merge: refuse update/merge if there are unresolved conflicts (BC) We currently allow updating and merging (with --force) when there are unresolved merge conflicts, as long as there is only one parent of the working copy. Even worse, when updating to another revision (linearly), if one of the unresolved files (including any conflict markers in the working copy) can now be merged cleanly with the target revision, the file becomes marked as resolved. While we could potentially allow updates that affect only files that are not in the set of unresolved files, that's considerably more work, and we don't have a use case for it anyway. Instead, let's keep it simple and refuse any merge or update (without -C) when there are unresolved conflicts. Note that test-merge-local.t explicitly checks for conflict markers that get carried over on update. It's unclear if that was intentional or not, but it seems bad enough that we should forbid it. The simplest way of fixing the test case is to leave the conflict markers in place and just mark the files resolved, so let's just do that for now.

tests: drop require slow in test-contrib-perf * skip presleep * use a stub mode which does not output and generally loops only once * only use one node for perfparents

convert/svn: quiet check-config

check-config: handle multiline config

check-config: escape period in regexp for inline comments

check-config: allow numbers in configs p4...

check-config: recognize convert style documentation

tests: use a single repo for test-contrib-perf

perf: perfrevlog optimize for perf.stub

perf: add getlen getlen will return 1 if perf.stub

perf: add optional rev for perflog and perftemplating

perf: perfparents honor config perf.parentscount

perf: offer perf.stub to only run one loop

perf: improve grammar of gettimer comment