Log Message:
Update to 1.9.61, set LICENSE. Requested by Francois Tigeot in PR 46489.

New in 1.9.60:

* New constants from 1.5:
  - IPP_AUTHENTICATION_CANCELED
  - IPP_PKI_ERROR
  - HTTP_NOT_IMPLEMENTED
  - HTTP_BAD_GATEWAY
  - HTTP_SERVICE_UNAVAILABLE
  - HTTP_GATEWAY_TIMEOUT
  - HTTP_NOT_SUPPORTED
  - HTTP_AUTHORIZATION_CANCELED
  - HTTP_PKI_ERROR

New in 1.9.59:

* Password callbacks can now return None to indicate they want to
  abort the current operation.

New in 1.9.58:

* cups.Connection.adminExportSamba

New in 1.9.57:

* Fixed rpm provides script for newer versions of rpm.

New in 1.9.56:

* Builds against older versions of CUPS again.

New in 1.9.55:

* cups.IPP_QUALITY_DRAFT, cups.IPP_QUALITY_NORMAL,
  cups.IPP_QUALITY_HIGH
* cups.IPP_PORTRAIT, cups.IPP_LANDSCAPE, cups.IPP_REVERSE_PORTRAIT,
  cups.IPP_REVERSE_LANDSCAPE
* cups.IPP_RES_UNITS_CM, cups.IPP_RES_UNITS_INCH
* Support for IPP_TAG_RESOLUTION as triplet (xres, yres, units).

New in 1.9.52:

* cups.Connection.getPPDs2(): New method, identical to getPPDs() but
  returning all attribute values as lists.

New in 1.9.50:

* cups.Connection.getPPD3()
* cups.Connection.getJobs() now takes optional requested_attributes argument.
* cups.Connection.getPrinterAttributes(): member-names is now always a list.
* cups.HTTP_NOT_MODIFIED constant.
* cups.PPD_ORDER_ANY constant.
* cups.PPD_ORDER_DOCUMENT constant.
* cups.PPD_ORDER_EXIT constant.
* cups.PPD_ORDER_JCL constant.
* cups.PPD_ORDER_PAGE constant.
* cups.PPD_ORDER_PROLOG constant.
* cups.PPD.emitString() method.
* cups.PPD.emit() method.
* cups.PPD.emitAfterOrder() method.
* cups.PPD.emitFd() method.
* cups.PPD.emitJCL() method.
* cups.PPD.emitJCLEnd() method.

New in 1.9.48:

* cups.Connection.cancelJob()'s optional second argument is now a keyword.