Make the XSD generator use non-hardcoded namespaces.

- Make the XSD generator use program->get_namespace("xsd")
  instead of program->get_xsd_namespace()
- Eliminate the explicit "xsd_namespace" in t_program.
- Deprecate the xsd_namespace token.
- Update example .thrift files and syntax files.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@745237 13f79535-47bb-0310-9956-ffa450edef68
4 files changed