This allows to pass extra arguments to windres, which is especially important
when using 64 bit windres for building 32 bit applications as the generated .o
file uses a wrong architecture unless "-F pe-i386" is explicitly specified.
See #15601.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75074 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775