[PATCH] Convert checks for PC98 support from platform #ifdefs to configure flag

[Tiago Vignatti]

Alan Coopersmith wrote:
> Default remains the same - on for most OS'es on i386 (except Solaris),
> off for everyone else.   Can be manually toggled via --enable-pc98 or
> --disable-pc98.
> 

maybe you could put come commentary somewhere in the code describing 
what is PC98 for people disinformed like me.


                       Tiago