Fix minor warnings.
Bugfix: NetBox commands --> Synchronize fails.

(http://forum.farmanager.com/viewtopic.php?p=110520#p110520)
version info: update.
FarPlugin.cpp: Cleanup.
Bugfix: Plugin displays summary size of files incorrectly.

(http://forum.farmanager.com/viewtopic.php?p=110385#p110385)
version info: update.
Queue.cpp: NB_DISABLE_COPY(TTerminalItem)
ne_socket.c: Try to optimize performance.
WinSCPFileSystem.cpp: Cleanup.
TWinSCPFileSystem::MultipleEdit: Refactoring.
Refactoring: Use ClearStruct
TWinSCPFileSystem::MultipleEdit: Refactoring.
TWinSCPFileSystem::MultipleEdit: Add comments.
WinSCPFileSystem.cpp: Bugfix.

(http://forum.farmanager.com/viewtopic.php?p=110599#p110599)
version info: update