Log Message:
Update to 7.4.0

Changelog:
2017-10-10: Version 7.4.0
  * New option --allow-chown to allow file ownership change
    in old file mode. Option --no-allow-chown does the opposite.
  * Code cleanup.

2017-07-04: Version 7.3.5
  * New flag 0 for option -i, --info. End information lines with a null
    character instead of a newline character, enabling correct file name
    interpretation when flag c is used.
  * Don't print leading spaces when option -i with flag c is used.
  * Code cleanup.
  * Manual update.
  * Translation updates.