configure.exe not adding SIMD options to CONFIG in qmodule.pri

configure.exe attempts to detect whether or not the host/target CPU supports SIMD instructions such as SSE2, SSE3, AVX, etc. and if so, it should add these options to the CONFIG variable in mkspecs\qmodule.pri, but this does not seem to be working. The side effect is this is that the optimized draw helpers are not currently getting compiled on Windows which implies suboptimal performance.

As a workaround passing -sse2 to configure.exe seems to add all the needed options correctly.