Fixes compilation on Windows. __attribute__ stuff is not available on VS2008
Fixes compilation on Windows. __attribute__ stuff is not available on VS2008

leecrest/luacrypto,aryajur/luacrypto,hp-sam/luacrypto-1,leecrest/luacrypto,mkottman/luacrypto,hp-sam/luacrypto-1,aryajur/luacrypto,mkottman/luacrypto