Windows allows people to pin an application to their taskbar, when a
user pins blender, the data we set in
`GHOST_WindowWin32::registerWindowAppUserModelProperties` is used
which includes the path to the `blender-launcher.exe`. Now once that
shortcut is created on the taskbar, this will never be updated, if
people remove blender and install it again to a different path
(happens often when using nightly builds) this leads to the
situation where the shortcut on the taskbar points to a no longer
existing blender installation. Now you may think, just un-pin and
re-pin that should clear that right up! It doesn't, it'll keep using
the outdated path till the end of time and there's no window API call
we can do to update this information. However this shortcut is stored
in the user profile in a sub-foder we can easily query, from there, we
iterate over all files, look for the one that has our appid in it, and
when we find it, update the path to the blender launcher to the
current installation, bit of a hack, but Microsoft seemingly offers no
other way to deal with this problem.
Ray molenkamp