fixincludes: fixing bsearch return type on sunos4, char* -> void*

[korbb@egcs.cygnus.com]

> This patch fixes the return type of bsearch on sunos4 from
> char* to void*.  (Same as is done with malloc et al.)
> 
> Okay to install?

Please, do :)

>                 Thanks,
>                 --Kaveh
> 
> PS: Its simple enough that perhaps the 2.95.1 branch could get this too?

Also, fine by me.  Jeff?