Makefile.in (cppmain.o, [...]): Don't depend on machmode.h.

Makefile.in (cppmain.o, [...]): Don't depend on machmode.h.

        * Makefile.in (cppmain.o, cpplib.o, cpphash.o, cppalloc.o,
        cpperror.o, cppexp.o, cppfiles.o, cppinit.o, fix-header.o,
        scan-decls.o): Don't depend on machmode.h.
        * cppexp.c: Don't define CHAR_BIT or HOST_BITS_PER_WIDE_INT anymore.
        Replace all instances of HOST_WIDE_INT with HOST_WIDEST_INT.
        * cppfiles.c: Likewise.
        * cpplib.c: Likewise.
        * cpplib.h: Likewise.  Also don't include machmode.h anymore.

From-SVN: r25446