* Removed /favor:blend from ARCH_DEP_CPPFLAGS
It is the default anyway, and including it stops the
MS Express compilers from building 64-bit executables.
* Added a CONFIG_SITE.Common.windows-x64-static file.
The MSVS 2010 linker crashes when when generating code
for this target with HOST_OPT = YES, so make it NO.