Summary:
This overrides the normal Mercurial statprof logic to allow us to pass custom
configuration to our customized version of statprof. In particular, it allows us
to choose between the thread and the signal profile methods, and between the
hotpath and json output formats.
Test Plan: hg.real log -r tip --config extensions.statprofext=../fb-hgext/statprofext.py --profile --config statprof.format='json' --config profiling.output=woooo.log
Reviewers: #mercurial, ttung, lcharignon
Reviewed By: lcharignon
Subscribers: lcharignon, mjpieters
Differential Revision: https://phabricator.intern.facebook.com/D3408386
Signature: t1:3408386:1465485488:400da1f8e1787674c9ea3888166767a485f2fbdf
