Use QPageSize and QPageMargins to get/set values in the print engines,
add api to directly set the values, and rewrite the docs to make the
paper-based api obsolete instead of the page-based api.
Add new PPK keys to pass QPageSize, QPageMargins and QPageLayout to the
print engines to ensure no level of detail is lost, e.g. for custom
sizes passed to QPrinter.
[ChangeLog][QtPrintSupport][QPrinter] QPrinter can now use QPageSize
and QPageLayout in the public api to control the page layout for a
print job.
Change-Id: Iee39a4042bcd6141d29b0a82b49066d7a7a78120
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
dbc50e06df