Prune old branch.sql
Append old branch.sql to master
Log number of busy threads instead of %age

It's too hard to reason about the charts we're seeing as we change the
number of threads.
Merge pull request #1614 from gittip/perc-to-n

Log number of busy threads instead of %age
Bump version to 10.1.36
Bump version to 10.1.36-dev
Merge branch 'master' into snapper