Patch to remove the use of the c++ keyword class in binutil sources.

[Martin Thuresson]

I have updated this patch, and also written one for the keyword new.

Build and ran "make check" without any new errors for the following targets:

alpha-freebsd
alpha-linux
arc-elf
arm-aout
arm-eabi
cr16-linux
cris-linux
crx-linux
d30v-linux
dlx-elf
hppa-linux
i370-linux
i686-linux
i960-elf
ia64-linux
iq2000-elf
m32c-elf
m32r-linux
m68hc11-linux
m68k-linux
mcore-elf
mep-elf
microblaze-elf
microblaze-elf
mips-linux
mmix-linux
mn10300-linux
moxie-elf
ns32k-netbsd
pdp11-aout
pj-linux
ppc-linux
rs6000-aix4
s390-linux
score-elf
sh-elf
sh-linux
sh64-linux
sparc-linux
spu-elf
tic4x-coff
vax-linux
x86_64-linux
x86_64-linux
xtensa-linux
z8k-coff

Thanks,
Martin
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