Update MountProg.cpp

Added support for NFSv2 VxWorks client (MNTv1 is needed).
Update NFS2Prog.cpp

Discarded the input Stream buffer, before returing to the caller, when a ProcedureWrite is issued with a wrong file Path.
Update NFSProg.cpp

Added separate method for clearing Prog attributes.
Update NFSProg.h

Added separate method for clearing Prog attributes.
Update PortmapProg.cpp

Added support for NFSv2 VxWorks client (MNTv1 is needed).
Update SocketStream.cpp

Added zeroing
Update winnfsd.cpp

The reset command should be better implemented. I'm keeping this TODO.
Merge pull request #1 from ERolfi/master

Changes for robustness and VxWorks NFSv2 Client