[PATCH] Add remaining float constants

Reviewed-by: Aaron Watry <awatry@gmail.com>

While you're at it, could you also add (end of section 6.11.2 in
version 1.1 spec):
#define MAXFLOAT FLT_MAX

MAXFLOAT is currently missing and is required for some of the
applications I'm currently working on getting up and running. I had
already written most of this patch, but lost the content when I
accidently did a 'git checkout .' while revising some patches.

--Aaron

While you're at it, could you also add (end of section 6.11.2 in
version 1.1 spec):
#define MAXFLOAT FLT_MAX

It’s in now. I defined FLT_MAX in terms of MAXFLOAT instead.

Jeroen