Import qpdfview-0.3.7 as print/qpdfview.

qpdfview uses the Poppler library for rendering and CUPS for
printing. It provides a clear and simple graphical user interface
using the Qt framework.

Current features include:
* Outline, properties and thumbnail panes
* Scale, rotate and fit
* Fullscreen and presentation views
* Continuous and multiple-page layouts
* Search for text
* Configurable tool bars
* Persistent per-file settings
* SyncTeX support
* Rudimentary annotation support (with Poppler version 0.20.1 or higher)
* Rudimentary form support

(ryoon)