TCP/session improvements

- Added svm fifo flag for tracking fifo dequeue events (replaces event
  length). Updated all code to switch to the new scheme.
- More session debugging
- Fix peek index wrap
- Add a trivial socket test client
- Fast retransmit/cc fixes
- tx and rx SACK fixes and unit testing
- SRTT computation fix
- remove dupack/ack burst filters
- improve ack rx
- improved segment rx
- builtin client test code

Change-Id: Ic4eb2d5ca446eb2260ccd3ccbcdaa73c64e7f4e1
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dbarach@cisco.com>
diff --git a/src/vnet/session/transport.h b/src/vnet/session/transport.h
index 421121d..2f912cb 100644
--- a/src/vnet/session/transport.h
+++ b/src/vnet/session/transport.h
@@ -38,7 +38,7 @@
   u32 thread_index;		/**< Worker-thread index */
 
 #if TRANSPORT_DEBUG
-  elog_track_t elog_track;	/**< Debug purposes */
+  elog_track_t elog_track;	/**< Event logging */
 #endif
 
   /** Macros for 'derived classes' where base is named "connection" */