Added Vegas and Westwood algorithms - original code

https://github.com/maferhe2/TCP-Vegas-Westwood
    5cae09feea84bd85b9d657833de90f4beae1de25
TCP: Vegas/Westwood: fixes: removed initialization of unused, undeclared member variable
TCP: Vegas/Westwood: sendData() parameter missed
TCP: Vegas: initialize some member variables, added FIXME
TCP: bugfix: retransmitData() at FIN was generated an error

this function used by DumbTCP only
TCP: examples: added different algorithm configs with PER variations to tcpclientserver example
TCP: algorithms: added tests
TCP: Vegas: style: was missed digit after decimal points