Punt iputils_common helpers.
Only two functions from this common library are used by rarpd.
The error fallback depends on program_invocation_short_name, which is a
GNU C library feature, and if you have the GNU C library, you have error,
so I'm really not sure what systems this works on.
And for rarpd, there seems to be no point in explicitly closing the
standard I/O streams since it doesn't print anything normally.
Get rid of IPUTILS_VERSION macro.
This program isn't part of iputils anymore.
Add NEWS.
Use gitlog-to-changelog w/ "make dist".
Import bootstrap script etc.
Import rarpd from iputils-
20211215
Well, with rarpd removed from iputils, let's extract it to a standalone
package. This is just the bare minimum to start, all source files are
unmodified from the iputils-
20211215 release, and a brand-new skeleton
build system is implemented to compile the software and documentation.