HUGE_VALF and HUGE_VALL support

[Jeff Johnston]

I mentioned a while back that I would take a crack at adding these 
values to newlib.  I have had some code kicking around for a while that 
was getting in the way of some recent posted changes so I just checked 
it in.  It has been built and tested on i686-pc-linux-gnu.

If anyone experiences problems, please post.  Corinna, I cc'd you to 
make you aware if Cygwin isn't overriding math.h.

-- Jeff J.

2005-10-14  Jeff Johnston  <jjohnstn@redhat.com>

         * libc/include/math.h (HUGE_VALF, HUGE_VALL): New.
         * libm/common/Makefile.am: Add s_infconst.c support.
         * libm/common/Makefile.in: Regenerated.
         * libm/common/s_infconst.c: New file with float and
         long double infinity support added.
         * libm/math/Makefile.am: Remove s_infconst.c support.
         * libm/math/Makefile.in: Regenerated.
         * libm/math/s_infconst.c: Moved to common directory.
         * libm/mathfp/Makefile.am: Remove s_infconst.c support.
         * libm/mathfp/Makefile.in: Regenerated.
         * libm/mathfp/s_infconst.c: Moved to common directory.