Added branch for compiling with c++-compat

[Matt Rice <ratmice at gmail dot com>]

Hi all, I added a branch for compiling gdb with c++-compat
named: archer-ratmice-compile-Wc++-compat

I've been doing:
CFLAGS="-Wc++-compat" ./configure --disable-werror
and then tackling things one type of warning at a time.
in hopes that this will make the patches more easily reviewable.

The downside to this I suppose is that I may temporarily introduce a
warning and then
subsequently miss it in the deluge... If this happens i'll fix these
as I notice.

I guess a balance between number of patches and patch length will be
somewhat important....
I've just been commiting about at the point that I get the urge to
hold down the space bar
and see how much longer the dang patch is.

so far everything has been fairly mechanical, there is one ada macro
which looks like it may be remotely interesting.