QPrinter::setFontEmbeddingEnabled should work on windows and mac

Currently, QPrinter::setFontEmbeddingEnabled doesn't work on windows or mac os per documentation: http://qt-project.org/doc/qt-5/qprinter.html#setFontEmbeddingEnabled.

It would be very helpful for dealing with font rendering issues(such as this one: https://bugreports.qt-project.org/browse/QTBUG-40770) to be able to disable embedding and just force the text to render as vectors/paths so it will match how it appeared in the gui.

Note: this switch is currently irrelevant on mac, but it will matter if font embedding is ever fixed there.