ctype checks not falling out soon enough (peudopatch)

[Benjamin Kosnik]

> The ctype checks are correctly determining that I'm on a Solaris 7 box.
> Unfortunately they then keep going and determine that I'm on an AIX box.
> :-)  I've a patch that only checks for <foo>'s ctype if the default would
> otherwise still be used.

Great idea. Saves time anyway. I've put your patch in, but am adding 
tenative HpuxX11 and Irix6.3 support, so chill and let me do a 
larger checkin tonight, okay? (Tenative as in, I'm having 
problems compiling on these systems so cannot test. Configuring will work 
though. Same problems as Aix4.2/4.3...)

> signed / unsigned

thought I fixed this as part of the alpha verification. You may need to 
turn off -Werror because of this...

(weird, I don't remember seeing this on sol2.7)

-benjamin