Make sure that files included using ".include <foo>" are really looked for in the system make file directory or in the specified -m paths instead of always looking in the other -I and .PATH specified paths.  (Commit log shamelessly stolen from NetBSD.)
Make sure that files included using ".include <foo>" are really
looked for in the system make file directory or in the specified
-m paths instead of always looking in the other -I and .PATH
specified paths.  (Commit log shamelessly stolen from NetBSD.)

Reviewed by:	yar

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase