COMP: MSVC AVX flag fix
COMP: MSVC AVX flag fix

BRAINSia/ITK,BRAINSia/ITK,malaterre/ITK,LucasGandel/ITK,vfonov/ITK,vfonov/ITK,richardbeare/ITK,thewtex/ITK,LucasGandel/ITK,Kitware/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,hjmjohnson/ITK,BRAINSia/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,Kitware/ITK,hjmjohnson/ITK,thewtex/ITK,LucasGandel/ITK,Kitware/ITK,malaterre/ITK,richardbeare/ITK,LucasGandel/ITK,thewtex/ITK,Kitware/ITK,hjmjohnson/ITK,malaterre/ITK,BRAINSia/ITK,BRAINSia/ITK,Kitware/ITK,vfonov/ITK,BRAINSia/ITK,vfonov/ITK,richardbeare/ITK,thewtex/ITK,malaterre/ITK,vfonov/ITK,malaterre/ITK,Kitware/ITK,LucasGandel/ITK,vfonov/ITK,malaterre/ITK,richardbeare/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,malaterre/ITK,BRAINSia/ITK,vfonov/ITK,Kitware/ITK,vfonov/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,richardbeare/ITK,malaterre/ITK,thewtex/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,richardbeare/ITK,thewtex/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK