* cccp.c: Don't define HOST_WIDE_INT. Replace all occurrences of
WIDE_INT with WIDEST_INT.
* cexp.y: Likewise.
Don't define unsigned_HOST_WIDE_INT, CHAR_BIT or
HOST_BITS_PER_WIDE_INT. Replace occurrences of PRINTF_PROTO_1()
style with PVPROTO() ATTRIBUTE_PRINTF_1 style macros. Replace
occurrences of "unsigned_HOST" with "unsigned HOST". Provide a
definition of variable `c89' when compiling a test binary and set it.
* system.h: Don't define the PRINTF_PROTO_* macros.