nimRawSetJmp
* fix vcc rawsetjmp * changing `_longjmp()` to `longjmp()` and `_setjmp()` to `setjmp()` * fix * fix setjmp to clangcl on Windows * fix genTrySetjmp() to clangcl on Windows (cherry picked from commit d2d8f1342b)
d2d8f1342b
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