dbmirror - dbmirror: Removed dependencies on the postgresql/contrib

Log Message:
-----------
Removed dependencies on the postgresql/contrib makefile system
(It no longer works, since it is no longer in the directory structure).

Added/reverted to the simple makefile

Modified Files:
--------------
    dbmirror:
        Makefile (r1.1.1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/dbmirror/dbmirror/Makefile.diff?r1=1.1.1.1&r2=1.2)