Changes in QtPrintSupport

[John Layt]

Hi,

I just pushed a large patch set for review for QtPrintSupport in Qt 5.3 which 
includes a few new classes for page layout handling that you might be 
interested in, or at least that you might have some opinions on as the experts 
in paged documents.

QPageSize - https://codereview.qt-project.org/#change,73387
QPageMargins - https://codereview.qt-project.org/#change,76896
QPageLayout - https://codereview.qt-project.org/#change,76897

Any comments welcome :-)

Cheers!

John.