/usr/dports now exists

[Matthew Dillon]

    Ok developers, I have created a /usr/ports override hierarchy for 
    DragonFly.  This will allow DragonFly developers to modify FreeBSD ports
    without us having to dup the FreeBSD ports hierarchy.

    I have made the following changes:

    * Created a 'dports' import, which should be checked out into /usr/dports.
      aka:  cd /usr; cvs -d cvs checkout dports;

    * Added /usr/src/usr.bin/relpath.  You should cd into there ane
      make obj; make; make install; make clean.

    * Updated /usr/src/share/mk, so you should make install from
      /usr/src/share/mk to install the new .mk files.

    I have dup'd sysutils/cpdup as an example of a DragonFly port.  The only
    difference in the Makefile from a FreeBSD port is that it should include
    <bsd.dport.mk> instead of <bsd.port.mk>.

    To create a DragonFly specific port override duplicate the FreeBSD port
    from /usr/ports into a new DragonFly port in /usr/dports (e.g. using cpdup)
    and modify the Makefile to .include <bsd.dport.mk> instead of
    <bsd.port.mk>, then make whatever additional modifications are needed
    for the DragonFly version.

    It should then be possible to build this new port either from the new
    DragonFly directory or from the original FreeBSD directory (it will
    detect the override, generating a warning, and then cd into the DFly
    port to do the build).

    Developers with commit privs:  Please feel free to commit additional 
    cleanups in the new dports tree.  Remember that this is (theoretically)
    a temporary stopgap until we finalize how the new package management system
    is going to work.

						-Matt