plib-1.8.0 no longer defines the cchar type (which we used because we were

plib-1.8.0 no longer defines the cchar type (which we used because we were
deriving a class and the base class used this type.)  Return to using
const char and hope people compiling against earlier versions of plib
have compilers that think typedef const char cchar; char *abc; is equivalent
to const char *abd;