Added attribute to pad options in Tcp header
Merged NOP, END, MSS in OptionRFC793
Added TcpOptionUnknown
Added operator== between TcpHeader
Documentation on tcp-header
Revert "Added attribute to pad options in Tcp header"

This reverts commit ab8db4f5e9f9aee00fe76d26e00897537c44ab0a.
Added a CalculateLength method on TcpHeader
Added LT_OR_EQ

Less than or equal to was missing in the test suite
Added GT_OR_EQ macro for symmetry
Added the Window scaling test
Added proof-of-concept of timestamp test
Added TcpWindowScale testing
Added serialization and deserialization test for Timestamp
Added the test cases for the RTT estimation from Timestamp
Fixed a typo
Merged RTT tests in one class
Fixed test behavior (removed ASSERT)
Documented Rtt Test
Reflected TS API change on timestamp-test
Tcp Option Test updated