Memory-based transport rewrite.

The old implementations of the memory-based transports (TBufferedTransport,
TFramedTransport, and TMemoryBuffer) shared very little code and all worked
a bit differently.  This change unifies them all as subclasses of a single
base (TBufferBase) which handles the fast-path operations (when requests
can be satisfied by the buffer) with inline methods (that will eventually
be made nonvirtual in the template branch) and calls out to pure-virutal
methods to handle full/empty buffers.  All of the buffer-management is now
done in terms of "base and bound" pointers rather than "pos" integers.

These classes were moved to TBufferTransports.{h,cpp}.  The .h is included
in TTransportUtils for backwards compatibility.

Also added a "TShortReadTransport" to assist testing transports.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665676 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/protocol/TDebugProtocol.h b/lib/cpp/src/protocol/TDebugProtocol.h
index bac2098..c08720b 100644
--- a/lib/cpp/src/protocol/TDebugProtocol.h
+++ b/lib/cpp/src/protocol/TDebugProtocol.h
@@ -12,8 +12,6 @@
 
 #include <boost/shared_ptr.hpp>
 
-#include <transport/TTransportUtils.h>
-
 namespace facebook { namespace thrift { namespace protocol {
 
 /*
@@ -158,6 +156,9 @@
 }}} // facebook::thrift::protocol
 
 
+// TODO(dreiss): Move (part of) ThriftDebugString into a .cpp file and remove this.
+#include <transport/TBufferTransports.h>
+
 namespace facebook { namespace thrift {
 
 template<typename ThriftStruct>