* aclocal.m4 (gcc_AC_C_CHARSET, gcc_AC_C_COMPILE_BIGENDIAN,
	gcc_AC_C_FLOAT_FORMAT): New macros.
	* configure.in: Add AC_PROG_CPP after CC tests;
	gcc_AC_C_CHARSET and gcc_AC_C_FLOAT_FORMAT after the sizeof
	tests; and gcc_AC_C_COMPILE_BIGENDIAN after gcc_AC_C_CHAR_BIT.
	* configure, config.in: Regenerate.

	* config/a29k/xm-a29k.h, config/arc/xm-arc.h,
	config/arm/xm-arm.h, config/c4x/xm-c4x.h,
	config/convex/xm-convex.h, config/d30v/xm-d30v.h,
	config/i370/xm-linux.h, config/i370/xm-oe.h,
	config/ia64/xm-ia64.h, config/m32r/xm-m32r.h,
	config/m68k/xm-m68k.h, config/mips/xm-mips.h,
	config/pa/xm-linux.h, config/pa/xm-pa.h,
	config/rs6000/xm-lynx.h, config/rs6000/xm-mach.h,
	config/rs6000/xm-rs6000.h, config/rs6000/xm-sysv4.h,
	config/sparc/xm-sparc.h, config/vax/xm-vax.h,
	config/we32k/xm-we32k.h: Delete.

	* config/i370/xm-mvs.h, config/m88k/m88k.h,
	config/romp/xm-romp.h, config/rs6000/xm-beos.h,
	config/vax/xm-vms.h: Don't define any of:
	HOST_FLOAT_FORMAT, HOST_EBCDIC, HOST_WORDS_BIG_ENDIAN

	* config/rs6000/aix.h: Define COLLECT_EXPORT_LIST here.

	* config.gcc: Remove references to deleted files.
	(i370-*-opened*): Use i370/xm-mvs.h (which now defines only
	FATAL_EXIT_CODE, which is the same between oe and mvs).

From-SVN: r40478