JDBC drivers: fix 'Unsupported URL' – drivers might be called witrh wrong URLs and then they should (according to the JavaDoc) return null instead of throwing an exception.
This problem occurred when --test-connection was testing multiple connections in parallel.
1 <?xml version="1.0" encoding="UTF-8"?>
2 <project xmlns="http://www.netbeans.org/ns/project/1">
3 <type>org.netbeans.modules.java.j2seproject</type>
5 <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
6 <name>jdbc-loopback-driver</name>
8 <root id="src.conf.dir" name="Config"/>
12 <root id="test.src.dir"/>