Fix {python|perl5|ruby|tcl}/java examples

- in Lib/gcj/cni.i: remove JvAllocObject(), change
  JvCreateJavaVM() argument from void* to JvVMInitArgs*
- in Examples/{python|perl5|ruby|tcl}/java/Makefile:
  pass full class name to gcjh, add Example.h as dependency,
  do not override CXX for compiling C++ sources
- in Examples/python/java/example.i:
  add destructor to class to prevent memory loss complaint

Examples/python/java/Makefile

@@ -6,10 +6,11 @@ INTERFACE  = example.i
 LIBS       = -lm
 
 check: build
+	$(MAKE) -f $(TOP)/Makefile python_run
 
-build: Example.class
+build: Example.class Example.h
 	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
-	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' CXX="gcj"  \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' \
 	CXXSHARED="gcj -fpic -shared Example.class" DEFS='' LIBS="-lstdc++" python_cpp
 
 clean:
@@ -17,6 +18,6 @@ clean:
 	rm -f $(TARGET).py
 	rm -f *.class Example.h
 
-Example.class: Example.java
+Example.class Example.h: Example.java
 	gcj -fPIC -C -c -g Example.java
-	gcjh  Example
+	gcjh Example.class

Examples/python/java/example.i

@@ -7,3 +7,7 @@
 
 
 %include Example.h
+
+%extend Example {
+  ~Example() {}
+}