make Windows 3m cl build flag properly dependent on configuration at top of make.ss
make Windows 3m cl build flag properly dependent on configuration at top of make.ss

svn: r6087

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket