[RFA/RFC] Remove check of ctype.h include in safe-ctype.h?

[Aaron W. LaFramboise]

Olivier Hainque wrote:

>  Here is an attempt from what I could observe and my understanding of
>  the previous comments.
> 
> 	ada/ 
> 	* adaint.c (__MINGW32__ section): Include ctype.h and define
> 	a fallback ISALPHA if IN_RTS.
> 	(__gnat_is_absolute_path): Use ISALPHA instead of isalpha. 
> 
>  Aaron, would it be possible for you to try it out ?

Olivier, sorry to take so long to get back to you.  I see you've checked 
this in, and yes, it works.  Thanks!