When checking for the _WIN32 preprocessor symbol, don't #error on failure
When checking for the _WIN32 preprocessor symbol, don't #error on failure


git-svn-id: 77a43f9646713b91fea7788fad5dfbf67e151ece@3833 94b884b6-d6fd-0310-90d3-974f1d3f35e1

jasonmccampbell/numpy-refactor-sprint,illume/numpy3k,Ademan/NumPy-GSoC,efiring/numpy-work,chadnetzer/numpy-gaurdro,chadnetzer/numpy-gaurdro,jasonmccampbell/numpy-refactor-sprint,illume/numpy3k,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,jasonmccampbell/numpy-refactor-sprint,efiring/numpy-work,Ademan/NumPy-GSoC,Ademan/NumPy-GSoC,teoliphant/numpy-refactor,illume/numpy3k,teoliphant/numpy-refactor,teoliphant/numpy-refactor,teoliphant/numpy-refactor,efiring/numpy-work,chadnetzer/numpy-gaurdro,efiring/numpy-work,illume/numpy3k,Ademan/NumPy-GSoC,chadnetzer/numpy-gaurdro