[app-text/poppler] Import from qt overlay for maintenance

Package-Manager: portage-2.2.10
[app-text/poppler] Sync with tree, cleanup header

Package-Manager: portage-2.2.10
[app-text/poppler] Move to git-r3 eclass

Package-Manager: portage-2.2.10
[app-text/poppler] Add qt5 USE flag

Package-Manager: portage-2.2.10