Add _M_IX86 define to IA32ABI/xabicc.c to permit compilation with MSVC 14 et al. [ci skip]
Add _M_IX86 define to IA32ABI/xabicc.c to permit compilation with MSVC 14 et al.
[ci skip]

timfel/squeakvm,OpenSmalltalk/vm,OpenSmalltalk/vm,OpenSmalltalk/vm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,OpenSmalltalk/vm,timfel/squeakvm