New ARI categories C++ and Macros

[Andrew Cagney]

http://sources.redhat.com/gdb/current/ari/

I've added to new ARI categories:

C++:
This counts things that are known to cause problems when trying to build 
GDB with a C++ compiler (which is different to trying to write GDB with 
C++).  More patterns welcome.

Macros:
This counts the number of macro defintions in configuration files 
(config/*.h config/*/*.h), where possible breaking them down by tm/xm/nm 
file.  The list is very long due largely to the number of tm-<arch>.h 
#defines that can be moved to <arch>-tdep.h.  Can architecture 
developers look at this?

Andrew