Pango 1.14.2 and Cairo 1.2.4

After upgrading to use recent bug-fix releases of Pango and Cairo, I’m now eyeballing and verifying the output of over 300 tests with differences, but so far the Pango and Cairo bug fixes don’t seem to have resulted in any fortuitous fixes for xmlroff bugs. At least the xmlroff testing module automates identifying the tests with differences so I don’t have to check the output of several hundred other tests.