snapshot - src: Fixing role that can execute Pg::Snapshots functions

Log Message:
-----------
Fixing role that can execute Pg::Snapshots functions

Modified Files:
--------------
    src/sql:
        pgsnapshots_create_snapshot.sql (r1.10 -> r1.11)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_create_snapshot.sql.diff?r1=1.10&r2=1.11)
        pgsnapshots_dblink.sql (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_dblink.sql.diff?r1=1.5&r2=1.6)
        pgsnapshots_drop_snapshot.sql (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_drop_snapshot.sql.diff?r1=1.8&r2=1.9)
        pgsnapshots_refresh_snapshot.sql (r1.7 -> r1.8)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_refresh_snapshot.sql.diff?r1=1.7&r2=1.8)
        pgsnapshots_snapshotlog.sql (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_snapshotlog.sql.diff?r1=1.4&r2=1.5)
        pgsnapshots_tables.sql (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/snapshot/src/sql/pgsnapshots_tables.sql.diff?r1=1.4&r2=1.5)