[Fontconfig] fc-arch things "sparc" has the "ppc" signature

[Albert Chin]

$ cd fc-arch
# ./fc-arch auto < fcarch.tmpl.h
...
#define FC_ARCHITECTURE "ppc"

So, it seems fc-arch believes Solaris/SPARC (32-bit) has the same
signature as "ppc". Ditto for HP-UX/PA and HP-UX/IA. And, for AIX,
fc-arch thinks the architecture is "m68k". And, for Tru64 UNIX,
fc-arch thinks the architecture is "x86-64".

So, is fc-arch checking too little to discern one architecture from
another?

-- 
albert chin (china at thewrittenword.com)