fix DLL shutdwn

[LADSoft]

in the current package linking to any of CRTDLL.DLL MSVCRT.DLL, or LSCRTL.DLL results in runtime shutdown code not being executed, for example the following code which generates a file in a standalone program won't actually flush the file contents when linking with a DLL:

int main()
{
    FILE *out = fopen("aa","w");
    fprintf(out, "hello there\n");    
   return 0
}