[En-Nut-Discussion] patched configure.ac for failed liblua detection

[Harald Kipp]

Tim,

Special thanks for this. Up to now I'd been unable to find out,
why this failed with some Lua packages. This one explains it.
Now I'm puzzled, why the macro worked on my Debian machine.
Anyway, I committed your change.

Harald

>===================================================================
>RCS file: /cvsroot/ethernut/nut/configure.ac,v
>retrieving revision 1.3
>diff -r1.3 configure.ac
>127c127
><       AC_SEARCH_LIBS([luaL_loadfile], [lualib lualib50], 
>[nutconf_tools_ok="yes"], [nutconf_tools_ok="no"])
>---
> >       AC_SEARCH_LIBS([luaL_loadfile], [lualib lualib50], 
> [nutconf_tools_ok="yes"], [nutconf_tools_ok="no"],[-lm -ldl])
>