Short update: Qt 5.1 didn't change anything as well as using the linaro toolchain (gcc4.7) with -mthumb. But at least this means that whenever we have a working QtQuick2 without the text rendering bug, we'll have a working thumb2 version, too.

I updated the wiki page and added the linaro instructions (should work with any other scratchbox toolchain, too). They are now the default way to build Qt5, but MADDE instructions should still work.

EDIT: Wiki page update done.