PR bin/6284, slightly munged about for platforms which aren't LP64.
Also, don't use hardcoded strings (or their lengths) when we've
already defined them in a common header file.
+ Fix a bug introduced when the package name comparison routines were moved -
alternate matching now completes and works properly.
+ Add -R argument to pkg_create, which re-orders any directories in the
generated PLIST into reverse alphabetic order.
+ Add -l argument to pkg_create, which checks that any symbolic links in
the package are relative-to-$PREFIX pathnames, rather than full pathnames.
+ General cleanup elsewhere.
Un-munge pkg_install/lib/Makefile which I'd overwritten on libftpio commit.
Make it compile on NetBSD.
Install pkg_* programs in /usr/sbin
XXX agc - Still to do XXX
Cleanup call to mktemp (for a tmp dir) in pkg_install/lib/pen.c
Create ftperr.c in the correct directory.