D1169: cext: add /* header */ comment to all PyVarObject_HEAD_INIT() calls

[durin42 (Augie Fackler)]

durin42 added a comment.


  I figured this out by finding a bug at Google on this topic, and then djasper showed me a workaround and said he'd look again at fixing the other case we're stuck on.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1169

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