Making wikimedia branch

  * recovered Makefile.am and configure.ac from
    https://gerrit.wikimedia.org/r/68711
  * added Java build targets for .class and .jar files
  * Modified upstream JNI interface to fit the details of
    the Debian packaging
  * added manifest file for dclass.jar
  * removed leftovers
  * update version to 2.2.0 in configure.ac
  * update to add dClass.class as dep for dclass_java.h
  * update added dClass.java as dep to dClass.class
  * overriden distclean to clean remaining bits

Change-Id: Iff211b26167a135f654ce1fc498a1be670421145