D2003: util: extract all date-related utils in utils/dateutil module

[lothiraldan (Boris Feld)]

lothiraldan abandoned this revision.
lothiraldan added a comment.


  I updated the series with copying util.py to utils/dateutil.py.
  
  I've also added the deprecation warnings but I'm not sure how to add deprecation warnings for variables.
  
  I also splitted the change as copying util.py made the change harder to read.
  
  Abandoned in favor of" https://phab.mercurial-scm.org/D2056

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2003

To: lothiraldan, #hg-reviewers, durin42
Cc: indygreg, mharbison72, durin42, mercurial-devel