delete the GCC 4.8 status, and update the 5.3 one a little.

external/gpl3/gcc/README.gcc48

@@ -1,34 +0,0 @@
-$Id: README.gcc48,v 1.6 2015/01/10 22:58:38 mrg Exp $
-
-usr.bin:
-	note:
-		-static-libstdc++ -static-libgcc
-		-rdynamic  -lz
-lib:
-
-	G_NOEXCEPTION_FLAGS -- need to use this
-
-new stuff:
-	cc1objcplus
-	collect2 -- need to re-introduce?
-
-	gcc-ar, -nm and -ranlib, for lto plugin stuff
-
-	- what is libitm?
-
-x86_64 port:
-- copied manually i386-builtin-types.inc instead of generating it.
-
-
-arch/feature list.  anything not here has been switched already:
-
-architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf
-------------	-----	-------	------	----------	------------	----	---
-coldfire	yes	N/A[9]	yes	yes		yes		?	?
-m68000		yes	?	yes	no[3]		
-m68k		yes	yes	yes	yes		yes
-powerpc64	yes[4]
-
-[3] relocations fail in libgcc
-[4] cc1 gets segv compiling libgcc.
-[9] no kernels in evbcf port yet

external/gpl3/gcc/README.gcc53

@@ -1,4 +1,4 @@
-$NetBSD: README.gcc53,v 1.1 2016/03/17 21:46:08 mrg Exp $
+$NetBSD: README.gcc53,v 1.2 2016/03/17 23:44:12 mrg Exp $
 
 lib:
 	libasan is disabled currently (haven't tried yet)
@@ -35,14 +35,14 @@ earmhf		y	?	y	y
 earmhfeb	y	?	y	y
 earmv4		y	?	y	y
 earmv4eb	y	?	y	y
-earmv6		y	?	y	 
-earmv6eb	y	?	y	 
-earmv6hf	y	?	y	 
-earmv6hfeb	y	?	y	 
-earmv7		y	?	y	 
-earmv7eb	y	?	y	 
-earmv7hf	y	?	y	 
-earmv7hfeb	y	?	y	 
+earmv6		y	?	y	y
+earmv6eb	y	?	y	y
+earmv6hf	y	?	y	y
+earmv6hfeb	y	?	y	y
+earmv7		y	?	y	y
+earmv7eb	y	?	y	y
+earmv7hf	y	?	y	y
+earmv7hfeb	y	?	y	y
 hppa
 i386		y	y	y	y		y		y	
 m68000