"." means the object directory, so it is just confusing to use it
when nothing is included from the object directory unless the object
directory is also the source directory. It is confusing for "."
not to mean the source directory anyway, so used `-I.'s should be
replaced by `-I${.OBJDIR}'.
This is not quite finished yet, and therefore I have not added it to the
usr.sbin/Makefile yet.
I collected a bunch of Andrews small programs into one: pccardc /phk
Reviewed by: phk
Submitted by: Andrew McRae <andrew@mega.com.au>