We can't compare a TCHAR*windowClassName with a char*buf
We can't compare a TCHAR*windowClassName with a char*buf

Even if buf were re-interpreted as WCHAR* when -DUNICODE,
strcmp wouldn't do the right thing (it will stop at first ASCII because high 8 bits will be zero!)
We thus use the TCHAR*dedicated `_tcscmp`.
If ever we want to switch to UTF16 (WCHAR*) windowClassName, then it will be `wcscmp`.

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