Set compile messages options as class variable

Refs django#18714. Same logic as options for makemessages commands.

Author: claudep

django/core/management/commands/compilemessages.py

@@ -37,7 +37,9 @@ class Command(BaseCommand):
 
  requires_system_checks = False
  leave_locale_alone = True
+
  program = 'msgfmt'
+ program_options = ['--check-format']
 
  def handle(self, **options):
  locale = options.get('locale')
@@ -92,7 +94,7 @@ def compile_messages(self, locations):
  "writable location. mo files will not be updated/created." % dirpath)
  return
 
- args = [self.program, '--check-format', '-o',
+ args = [self.program] + self.program_options + ['-o',
  npath(base_path + '.mo'), npath(base_path + '.po')]
  output, errors, status = popen_wrapper(args)
  if status: