Added missing .class files with a '$' in them to JAR.
Removed makefile duplicate
Fixed 'No rule to make target' error in makefile
Makefiles can now be executed multithreaded
Fixed perf failing to build multithreaded
Restore the JZMQ_CLASS_FILES vairable.
Merge pull request #294 from GreatFruitOmsk/master

Remove unused make file. Ensure make won't fail on various platforms and all class files will be included.