Log Message:
Fix a silly build failure on HP-UX. For reasons unknown, libXfont
(or actually the bundled t1lib) provides it's "own" implementation of
stdio.h as t1stdio.h. For this reason they take care not to include stdio.h
to avoid conflicts. But they do include stdlib.h which on HP-UX
recursively includes stdio.h. Fix by not including stdlib.h on HP-UX.