Some GCC files still using GPLv1

[Joseph S. Myers]

The following files in GCC are still distributed under GPL version 1, or,
at your option, any later version.  Should they be updated to refer to GPL
version 2?

gcc/config/1750a/1750a-protos.h
gcc/config/1750a/1750a.c
gcc/config/1750a/1750a.h
gcc/config/1750a/1750a.md
gcc/config/1750a/xm-1750a.h
gcc/config/convex/convex.c
gcc/config/dsp16xx/dsp16xx-protos.h
gcc/config/dsp16xx/dsp16xx.h
gcc/config/dsp16xx/xm-dsp16xx.h
gcc/config/elxsi/elxsi-protos.h
gcc/config/elxsi/elxsi.c
gcc/config/elxsi/elxsi.h
gcc/config/elxsi/elxsi.md
gcc/config/elxsi/xm-elxsi.h
gcc/config/m68k/amix.h
gcc/config/m68k/atari.h
gcc/config/m68k/ccur-GAS.h
gcc/config/m68k/linux-aout.h
gcc/config/m68k/linux.h
gcc/config/m68k/plexus.h
gcc/config/m68k/sgs.h
gcc/config/m68k/xm-amix.h
gcc/config/pa/elf.h
gcc/config/pa/long_double.h
gcc/config/pa/som.h
gcc/config/pdp11/2bsd.h
gcc/config/pdp11/pdp11-protos.h
gcc/config/pdp11/pdp11.c
gcc/config/pdp11/pdp11.h
gcc/config/pdp11/pdp11.md
gcc/config/pj/pj.md
gcc/config/we32k/we32k-protos.h
gcc/config/we32k/we32k.c
gcc/config/we32k/we32k.h
gcc/config/we32k/we32k.md

-- 
Joseph S. Myers
jsm28@cam.ac.uk