universal_include: fix warnings generated by -Wundef
universal_include: fix warnings generated by -Wundef

_MSC_VER isn't defined on non-VC compilers (obviously).

Signed-off-by: Steven Noonan <4068f0880b399410602d694b3cc711c8a8f4727e@uplinklabs.net>

tycho/crisscross,tycho/crisscross,prophile/crisscross,prophile/crisscross,prophile/crisscross,tycho/crisscross