grouperPatchStatusFile can't read patch file in a jar

When the UI starts (this is in the startup, so may affect other modules), it logs error:

2018-08-01 15:20:50,413: [default task-2] ERROR GrouperVersion.patchesInstalled(440) - Error: cant process grouperPatchStatus.properties
java.lang.RuntimeException: log4j.properties doesnt exist
at edu.internet2.middleware.grouper.misc.GrouperVersion.grouperPatchStatusFile(GrouperVersion.java:379)
at edu.internet2.middleware.grouper.misc.GrouperVersion.patchesInstalled(GrouperVersion.java:405)
at edu.internet2.middleware.grouper.misc.GrouperStartup.appendPatchLevelsToStartupString(GrouperStartup.java:203)
at edu.internet2.middleware.grouper.misc.GrouperStartup.printConfigOnce(GrouperStartup.java:137)
at edu.internet2.middleware.grouper.misc.GrouperStartup.startup(GrouperStartup.java:271)
at edu.internet2.middleware.grouper.subj.SubjectResolverFactory.getInstance(SubjectResolverFactory.java:58)
at edu.internet2.middleware.grouper.SubjectFinder.getResolver(SubjectFinder.java:928)
at edu.internet2.middleware.grouper.SubjectFinder.findRootSubject(SubjectFinder.java:913)
at edu.internet2.middleware.grouper.GrouperSession.startRootSession(GrouperSession.java:427)
at edu.internet2.middleware.grouper.GrouperSession.startRootSession(GrouperSession.java:445)
at edu.internet2.middleware.grouper.j2ee.status.GrouperStatusServlet.doGet(GrouperStatusServlet.java:166)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)

This is a non-fatal error. In our installation, our log4j.properties file is embedded in an included jar file. The GrouperVersion.grouperPatchStatusFile() assumes these are filesystem objects, so can't read them from other types of containers.

This may need the same change as for the older subject.properties change – just change from files and paths to resources and uri's.