adding documentation syntax to thrift

see DocTest.thrift for examples.

todo: integrate parsed documentation into code generation

review: marc k, mcslee
test plan: DocTest.thrift


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@664970 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/parse/t_program.h b/compiler/cpp/src/parse/t_program.h
index 7f7af44..610867a 100644
--- a/compiler/cpp/src/parse/t_program.h
+++ b/compiler/cpp/src/parse/t_program.h
@@ -18,6 +18,7 @@
 #include "t_list.h"
 #include "t_map.h"
 #include "t_set.h"
+//#include "t_doc.h"
 
 /**
  * Top level class representing an entire thrift program. A program consists