D1170: parsers: allow clang-format here

[durin42 (Augie Fackler)]

durin42 added a comment.


  To review this, I suggest removing parsers.c from the blacklist and running `make format-c` (see https://phab.mercurial-scm.org/D1167) to observe that the resulting diff matches what's in this commit, rather than hand-inspecting the entire diff.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1170

To: durin42, #hg-reviewers
Cc: mercurial-devel