* Updated DEFS.h to include ALTENTRY() and ALTASENTRY() for alternate

* Updated DEFS.h to include ALTENTRY() and ALTASENTRY() for alternate
  entry names, and made ENTRY, ASENTRY, ALTENTRY, and ALTASENTRY do
  longword alignment.
* Updated SYS.h to use NOP padding in the .align for text.
* Added $Id$ to DEFS.h and SYS.h
* Incorporated some additional i386 string optimizations from NetBSD:
	bcmp.s		- modified to compare by words
	bcopy.s		- bcopy is a void function, don't return 0
	memcmp.s	- modified to compare by words
	memmove.s and memcpy.s
			- combined into one function (they were identical)
			  by using new ALTENTRY() from above
			- don't use intermediate register for notl
			- deleted memcpy.s as it is no longer needed
			- imported NetBSD hack to Makefile.inc to make
			  it not build memcpy.o if memmove.s exists