Thread: pgsql: Clean up some misleading references to %p being a full path, per

Log Message:
-----------
Clean up some misleading references to %p being a full path, per Simon.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        backup.sgml (r2.93 -> r2.94)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/backup.sgml.diff?r1=2.93&r2=2.94)
    pgsql/src/backend/access/transam:
        xlog.c (r1.254 -> r1.255)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xlog.c.diff?r1=1.254&r2=1.255)
    pgsql/src/backend/postmaster:
        pgarch.c (r1.25 -> r1.26)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/pgarch.c.diff?r1=1.25&r2=1.26)