windows: fpe exception handling needs refactor
When we handle FPE on Mingw ECL crashes with FE_INEXACT. Moreover on MSVC exception are caught correctly, but generic arithmetic-error
instead of a specific condition. See src\c\unixint.d
, src\h\impl\*fenv*
.
See also _ecl_w32_exception_filter
For now we disable fpe handing for mingw and leave msvc as is.