Add javapackages-tools requires to jgit for /usr/bin/build-classpath
    
    Installing jgit without weak deps on rawhide fails to pull in
    javapackages-tools, leaving the jgit command unable to run:
    
      $ jgit -h
      /usr/bin/jgit: line 63: build-classpath: command not found
      Error: Could not find or load main class org.eclipse.jgit.pgm.Main