pgsql-server: Remove contrib/rserv, since there are better replication

Log Message:
-----------
Remove contrib/rserv, since there are better replication solutions
available elsewhere (including a descendant project on gborg).

Modified Files:
--------------
    pgsql-server/contrib:
        Makefile (r1.49 -> r1.50)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/Makefile.diff?r1=1.49&r2=1.50)
        README (r1.73 -> r1.74)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/README.diff?r1=1.73&r2=1.74)

Removed Files:
-------------
    pgsql-server/contrib/rserv:
        ApplySnapshot.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/ApplySnapshot.in)
        CleanLog.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/CleanLog.in)
        GetSyncID.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/GetSyncID.in)
        InitRservTest.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/InitRservTest.in)
        Makefile
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/Makefile)
        MasterAddTable.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/MasterAddTable.in)
        MasterInit.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/MasterInit.in)
        MasterSync.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/MasterSync.in)
        PrepareSnapshot.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/PrepareSnapshot.in)
        README.rserv
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/README.rserv)
        RServ.pm
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/RServ.pm)
        Replicate.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/Replicate.in)
        RservTest.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/RservTest.in)
        SlaveAddTable.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/SlaveAddTable.in)
        SlaveInit.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/SlaveInit.in)
        master.sql.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/master.sql.in)
        regress.sh
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/regress.sh)
        rserv.c
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/rserv.c)
        slave.sql.in
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/contrib/rserv/slave.sql.in)