This allows Qmake to use the version number as well as not requiring all
other uses of the version string to strip double quotes from it. This
also reduces the fragility of the version string as it was required to
be a valid C++ char*, even in contexts where that wouldn't matter.
This is definitely not a pretty thing. Double quotes are required around
the string which means they'll need to be removed in the NSIS and Python
scripts.