pytype: stop excluding procutil.py
This avoids these false warnings:
File "/mnt/c/Users/Matt/hg/mercurial/utils/procutil.py", line 78, in <module>:
No attribute 'register' on Type[io.BufferedIOBase] [attribute-error]
File "/mnt/c/Users/Matt/hg/mercurial/utils/procutil.py", line 117, in <module>:
No attribute 'register' on Type[io.IOBase] [attribute-error]
File "/mnt/c/Users/Matt/hg/mercurial/utils/procutil.py", line 770, in runbgcommandpy3:
No attribute 'close' on int [attribute-error]
In Union[IO[Union[bytes, str]], int]
Differential Revision: https://phab.mercurial-scm.org/D11927
Our full contribution guidelines are in our wiki, please see:
https://www.mercurial-scm.org/wiki/ContributingChanges
If you just want a checklist to follow, you can go straight to
https://www.mercurial-scm.org/wiki/ContributingChanges#Submission_checklist
If you can't run the entire testsuite for some reason (it can be
difficult on Windows), please at least run `contrib/check-code.py` on
any files you've modified and run `python contrib/check-commit` on any
commits you've made (for example, `python contrib/check-commit
273ce12ad8f1` will report some style violations on a very old commit).