cxf-codegen-plugin fails multiple executions with the same wsdl

bug introduced as of v 2.7.8:
The implementation of org.apache.cxf.maven_plugin.AbstractCodegenMoho.getDoneFile(...) ignores the 'String mojo' parameter and only uses the baseDir and wsdlUri parameters when generating the 'done' filename.

When multiple executions are run (wsdl2js and wsdl2java) using the same wsdl, the second execution's generate()-shouldRun() code path finds the "done" generated by the first execution with a newer timestamp and thus skips setting doWork to true. If there are no dependent files configured, then generate exits with "Nothing to generate"