[libltdl] removal from gnu ports

Hi

I'm sure I was reading yesterday on a different machine about the linker
flag -ld which has something to do with gnu dlopen and how it's ok to
remove those from your Makefile since FreeBSD handles dlopen and a few
other things from that header in the standard libc.

Is that correct?

I'm seeing some errors when running make because of #include LT_CONFIG_H

Those files in this instance also handles dlopen and related system calls.
It should also be safe up remove those "ltdl" headers from the Makefile as
well?

Best,
Owen