Make the C++ generator use non-hardcoded namespaces.

- Make the C++ generator use program->get_namespace("cpp")
  instead of program->get_cpp_namespace()
- Eliminate the explicit "cpp_namespace" in t_program.
- Deprecate the cpp_namespace token.
- Update example .thrift files and syntax files.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665513 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/thrift.vim b/thrift.vim
index bb849a3..bf6414b 100644
--- a/thrift.vim
+++ b/thrift.vim
@@ -30,7 +30,7 @@
 syn match thriftNumber "-\=\<\d\+\>" contained
 
 " Keywords
-syn keyword thriftKeyword namespace cpp_namespace java_package cocoa_prefix
+syn keyword thriftKeyword namespace java_package cocoa_prefix
 syn keyword thriftKeyword csharp_namespace smalltalk_category smalltalk_prefix
 syn keyword thriftKeyword php_namespace ruby_namespace py_module perl_package
 syn keyword thriftKeyword xsd_all xsd_optional xsd_nillable xsd_namespace xsd_attrs