notmuch/performance-test/T04-thread-subquery.sh, branch 0.38.2

perf-tests: #!/bin/bash -> #!/usr/bin/env bash

2019-06-07T10:59:56Z

I couldn't run the performance tests on my machines due to a hardcoded bash path. Use env for finding bash in weird systems like NixOS. Signed-off-by: William Casarin

perf-test: add simple test for thread subqueries

2018-05-07T11:42:53Z

This is not a particularly sensible query, but thread:{date:2010} is a good way to generate fairly large intermediate queries.