flexfax: gcc-2.8.1 and fxSIGVEC handling under SunOS 4.1.x

[Nico Kadel-Garcia <raoul@cirl.meei.harvard.edu>]

The problem seems to be a subtlety in the CheckSigvecHandler
routine: errors are reported under gcc-2.8.1 and SunOS 4.1.4, and
the fxSIGVECHANDLER never gets set appropriately in port.h

The attacked patch is a kludge to cope with it: I'm certain that a 
C++ programmer could find a correct way to do the test that would
pass under this OS and others with gcc-2.8.1.


			Nico Kadel-Garcia
			Senior Engineer, CIRL 
			Mass. Eye and Ear Infirmary
			raoul@cirl.meei.harvard.edu
2327a2328
> 	    fxSIGVECHANDLER="$i";
2330a2332,2337
>     if [ -z "$fxSIGVECHANDLER" ]; then
> 	i="(void (*)())"
> 	echo "#define fxSIGVECHANDLER $i"
> 	Note "... use $i for sigvec handler type"
> 	fxSIGVECHANDLER="$i";
>     fi