New attempt to declare the UCAR repository only in the NetCDF module,
since a few experiments with Maven 3.1.1 suggests that the exception
previously seen with Maven 3.0.4 has been fixed.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1570630 13f79535-47bb-0310-9956-ffa450edef68