Thrift: Change docstring syntax.

Summary:
The old docstring syntax collided with the syntax for list constants.
The new syntax looks a lot like doxygent comments.

Trac Bug: #4664

Blame Rev: 32392

Reviewed By: mcslee

Test Plan:
../compiler/cpp/thrift -cpp DocTest.thrift
(with dump_docs on)
and looked at the output.
Generated C++ is identical to installed thrift.

Revert Plan: ok


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665182 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/main.h b/compiler/cpp/src/main.h
index b8d7971..a60399b 100644
--- a/compiler/cpp/src/main.h
+++ b/compiler/cpp/src/main.h
@@ -65,6 +65,11 @@
 std::string include_file(std::string filename);
 
 /**
+ * Cleans up text commonly found in doxygen-like comments
+ */
+char* clean_up_doctext(char* doctext);
+
+/**
  * Flex utilities
  */