Allow legacy installed font info distribution file
Allow legacy installed font info distribution file

Because Dompdf allows some customization of its operational parameters a user may load a custom dompdf_font_family_cache.dist.php. If a user has created and is loading such a file, and is using a pre-1.1.0 format, Dompdf will fail to run. This change allows Dompdf to utilize the file regardless of which format it is in.

fixes #2648

dompdf/dompdf,dompdf/dompdf