combine.c, [...]: consistently use "VAX", "VAXen", and "MicroVAX" in comments and...

combine.c, [...]: consistently use "VAX", "VAXen", and "MicroVAX" in comments and documentation.

	* combine.c, config.gcc, cse.c, defaults.h, real.c, reload.c,
	simplify-rtx.c, config/alpha/alpha.h, config/avr/avr.h,
	config/convex/convex.h, config/d30v/d30v.c,
	config/d30v/d30v.h, config/dsp16xx/dsp16xx.h,
	config/elxsi/elxsi.h, config/fr30/fr30.h, config/m88k/m88k.c,
	config/mips/mips.h, config/mn10200/mn10200.h,
	config/mn10300/mn10300.h, config/pdp11/pdp11.md,
	config/v850/v850.h, config/vax/openbsd.h,
	config/vax/openbsd1.h, config/vax/ultrix.h,
	config/vax/vax-protos.h, config/vax/vax.c, config/vax/vax.h,
	config/vax/vax.md, config/vax/vaxv.h, config/vax/xm-vms.h,
	cp/decl2.c, doc/contrib.texi, doc/cpp.texi, doc/gcc.texi,
	doc/install.texi, doc/invoke.texi, doc/md.texi, doc/rtl.texi,
	doc/tm.texi: consistently use "VAX", "VAXen", and "MicroVAX"
        in comments and documentation.

From-SVN: r44589