* xm-interix.h, xm-lynx.h, alpha/xm-vms.h, convex/xm-convex.h,
	i370/xm-i370.h, i370/xm-linux.h, i370/xm-mvs.h, i370/xm-oe.h,
	i386/xm-beos.h, i386/xm-dos.h, i386/xm-mingw32.h,
	i860/xm-i860.h, m68k/xm-3b1.h, m68k/xm-amix.h, m68k/xm-aux.h,
	m68k/xm-crds.h, m68k/xm-mot3300.h, m88k/xm-sysv3.h,
	mips/xm-mips.h, rs6000/xm-beos.h, vax/xm-vms.h:
	Don't define any of:
	USE_PROTOTYPES, vfork, mktemp, SVR3, NO_SYS_PARAMS_H,
	P_tmpdir, MVS, NO_DBX_FORMAT, USE_STDARGS, STDC_HEADERS,
	NO_PRECOMPILES, i860, __PTR_TO_INT, __INT_TO_PTR, rindex,
	index, FULL_PROTOTYPES, AUX, R_OK, W_OK, X_OK, F_OK,
	STACK_DIRECTION, MIPS, MAX_READ_LEN, MAX_WRITE_LEN.

	* alpha/xm-alpha.h, clipper/xm-clix.h, d30v/xm-d30v.h,
	fr30/xm-fr30.h, i370/xm-linux.h: Remove commented-out macro
	definitions.

	* m68k/xm-3b1.h, m68k/xm-crds.h, m88k/xm-sysv3.h:
	Delete now-empty file.

	* alpha/vms.h: Define NEED_ATEXIT here...
	* alpha/xm-vms.h: ...not here.

	* i386/cygwin.h: Don't define PARAMS.
	* mips/mips.c: Don't prototype mktemp.  Don't define
	P_tmpdir.  Use make_temp_file to create temporary files.
	Don't be clever and delete temporary files early.
	* f/com.c: Don't define STDC_HEADERS, autoconf handles it.
	* config.gcc: Drop references to deleted files.  Don't define
	FULL_PROTOTYPES.
	* gcc.texi: Don't mention USE_PROTOTYPES.

From-SVN: r40048