[CA-151657] Increase speed of dpriv to guest agent clipboard copying

By increasing buffer sizes for communications between client and agent

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>
Merge pull request #8 from benchalmers/ca-151657

[CA-151657] Increase speed of dpriv to guest agent clipboard copying
[CA-150831] Do not cache Win32_TerminalService Setting WMI Object

This means that the value for data/ts will be reread each time it is recreated
Merge pull request #9 from benchalmers/ca-150831

[CA-150831] Do not cache Win32_TerminalService Setting WMI Object