[PATCH] Use CFLAGS for compiling bin2hex

[Jeremy Kerr]

>    BUILD_CFLAGS=... ./configure
>
> didn't also work. That would be acceptable for me.

OK, patch coming.

However, note that the BUILD_* is only used to compile tools to run on 
the build machine, and hence during the build process. There's not much 
point adding optimisation flags here, as it's only going to 
(potentially) speed up the build process, and not affect the resulting 
kexec binary in any way.

Cheers,


Jeremy