test: adapt to change in cache warming in core
Core Mercurial has a more rational cache warming strategy now. 2b6692df1bdf
stopped warming of the cache after every commit (in favor of end of transaction
warming). This reflect in the blackbox test output.
#require test-repo pyflakes
Copied from Mercurial core (60ee2593a270)
$ cd "`dirname "$TESTDIR"`"
run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)
$ hg locate 'set:(**.py or grep("^#!.*python")) - removed()' 2>/dev/null \
> | xargs pyflakes 2>/dev/null