Patch: new file libgcc2.h for libgcc2.c macros and decls

[Dan Nicolaescu]

Can I suggest you to look at the following patch:

 http://gcc.gnu.org/ml/gcc-patches/1999-12/msg00223.html

I was proposing there to create 2 header files for the libgcc2, one
that contains the type definitions for the normal types, and another
one the type that GCC defines, you could add the needed prototypes to
each one of them. 

When libgcc2.c is splited into files each small fine would include
only one of the 2 .h files, and you avoid all the wizardry of
defining/undefining some of the types that are now present in
libgcc2.c

--dan