Neither QWebView nor QWebEngine support html5 standards - no MathML support

Official opensource libraries shipped by Qt do not support the html5 spec in that they do not recognize/render MathML by default in QWebView (WebKit) nor in the new QWebEngine.

I grabbed qt-everywhere-opensource-src-5.4.1.tar.gz and unpacked it and edited .//qtwebkit/Tools/qmake/mkspecs/features/features.pri and changed it use the ENABLE_MATHML=1\ and configured and built on Mac OS X 10.10.2 with the latest XCode and the build completed and seems to work well and QWebView now recognizes and renders MathML.

So why do official Qt opensource builds not support MathML as support for it is required as part of html5 standard, it already appears to implemented enough to be useful and it already appears to work.

Any chance we can get MathML support as part of official QtWebKit builds in the next point release? Are there plans to bring mathML support to QWebEngine?