gex: use XML::Parser as priority for XML::Reader
gex: use XML::Parser as priority for XML::Reader

because XML::Parsepp has some issues to correctly parse XML with PI

e.g.
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="manifest.xsl"?>

XML::Parsepp will prompt error:
Error-0620: XML or text declaration not at start of entity

joez/ptk,joez/ptk,joez/ptk