sync: update pdf-script from github.com/peyajm29/pdf-script@3538c5b239a9e0e76c810f18b40bae862f5b4ab2

sync: update pdf-script from github.com/peyajm29/pdf-script@e01da77cdffd02bb939e97990a9f77de211d8c4d

sync: update pdf-script from github.com/peyajm29/pdf-script@70bff5d4e8a7b6412ca4848ad01dca86cf32103c

Fix #33: restore dc:creator XMP field to real authors after setCreator()

Fix #32: set PDF Creator field to iTagPDF (www.itagpdf.com)

add pdf-script as plain directory