Bug#567363: evince cannot correctly save some pdf forms

[anomie at users.sourceforge.net]

Package: evince
Version: 2.28.2-1

Some PDF forms, such as http://www.irs.gov/pub/irs-pdf/f1040es.pdf, can
be opened with evince and edited fine, but when saving all the changes
are forgotten and the modified fields in the saved version can no longer
be edited. When saving, evince outputs the following error to the
console once for each field in the form that was modified:

 Error: Reference in Fields array to an invalid or non existant object

Running the original pdf through either pdfopt or pdfedit's delinearize
function creates a form that can be correctly saved, at least in this
case.