[krbdev.mit.edu #6710] 1.8 build failure only when CPPFLAGS=-DDEBUG

[Tom Yu via RT]

"Jeff Blaine via RT" <rt-comment at krbdev.mit.edu> writes:

> Builds fine without specifying CPPFLAGS.
>
> RHELv5.5 x86 and gcc 4.1.2 as provided by OS.
>
> ./configure CPPFLAGS="-DDEBUG"

I think CPPFLAGS=-DDEBUG has never consistently worked from the top
level.  I'll look to see if we document this anywhere.