Make the Java generator use non-hardcoded namespaces.

- Make the Java generator use program->get_namespace("java")
  instead of program->get_java_namespace()
- Eliminate the explicit "java_namespace" in t_program.
- Deprecate the java_namespace token.
- Update example .thrift files and syntax files.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665514 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/tutorial/tutorial.thrift b/tutorial/tutorial.thrift
index 575afcb..3a1b7d2 100755
--- a/tutorial/tutorial.thrift
+++ b/tutorial/tutorial.thrift
@@ -45,7 +45,7 @@
  * target languages.
  */
 namespace cpp tutorial
-java_package tutorial
+namespace java tutorial
 php_namespace tutorial
 perl_package tutorial
 smalltalk_category Thrift-Tutorial