logcmdutil: call _exthook() in changesettemplater...
logcmdutil: call _exthook() in changesettemplater
Class changesetprinter has an _exthook() method that is called in
_show() before the patch is displayed. Call the method as well in
changesettemplater._show().
Differential Revision:
https://phab.mercurial-scm.org/D7505