Please convert System.out.println usage to proper log statements:

Subdir yangtools/
Running command: grep -rn System.out .
./model/iana/iana-afn-safi/target/apidocs/org/opendaylight/yang/gen/v1/urn/ietf/params/xml/ns/yang/iana/afn/safi/rev130704/AddressFamily.html:632:  System.out.println(c);
./model/iana/iana-afn-safi/target/apidocs/org/opendaylight/yang/gen/v1/urn/ietf/params/xml/ns/yang/iana/afn/safi/rev130704/SubsequentAddressFamily.html:596:  System.out.println(c);
./model/iana/iana-if-type/target/apidocs/org/opendaylight/yang/gen/v1/urn/ietf/params/xml/ns/yang/iana/_if/type/rev130704/IanaIfType.html:3476:  System.out.println(c);
./model/ietf/ietf-inet-types/target/apidocs/org/opendaylight/yang/gen/v1/urn/ietf/params/xml/ns/yang/ietf/inet/types/rev100924/IpVersion.html:248:  System.out.println(c);
./model/ietf/ietf-ted/target/apidocs/org/opendaylight/yang/gen/v1/urn/TBD/params/xml/ns/yang/network/ted/rev130712/SwitchingCapabilities.html:309:  System.out.println(c);
./yang/yang-data-impl/src/test/java/org/opendaylight/yangtools/yang/data/impl/NodeHelper.java:406: System.out.println(new String(actualRaw.toByteArray()));
./yang/yang-data-impl/src/test/java/org/opendaylight/yangtools/yang/data/impl/NodeModificationBuilderImplTest.java:51: NodeHelper.dumpDoc(diffShadow, System.out);