Rename ConnParams to ClientParams

Now that we've split out server state to ServerParams, ConnParams
only contains state for a client. Rename the class and variables
to reflect this.
diff --git a/common/rfb/SMsgHandler.cxx b/common/rfb/SMsgHandler.cxx
index 137734b..f0e277c 100644
--- a/common/rfb/SMsgHandler.cxx
+++ b/common/rfb/SMsgHandler.cxx
@@ -36,7 +36,7 @@
 
 void SMsgHandler::setPixelFormat(const PixelFormat& pf)
 {
-  cp.setPF(pf);
+  client.setPF(pf);
 }
 
 void SMsgHandler::setEncodings(int nEncodings, const rdr::S32* encodings)
@@ -44,22 +44,22 @@
   bool firstFence, firstContinuousUpdates, firstLEDState,
        firstQEMUKeyEvent;
 
-  firstFence = !cp.supportsFence;
-  firstContinuousUpdates = !cp.supportsContinuousUpdates;
-  firstLEDState = !cp.supportsLEDState;
-  firstQEMUKeyEvent = !cp.supportsQEMUKeyEvent;
+  firstFence = !client.supportsFence;
+  firstContinuousUpdates = !client.supportsContinuousUpdates;
+  firstLEDState = !client.supportsLEDState;
+  firstQEMUKeyEvent = !client.supportsQEMUKeyEvent;
 
-  cp.setEncodings(nEncodings, encodings);
+  client.setEncodings(nEncodings, encodings);
 
   supportsLocalCursor();
 
-  if (cp.supportsFence && firstFence)
+  if (client.supportsFence && firstFence)
     supportsFence();
-  if (cp.supportsContinuousUpdates && firstContinuousUpdates)
+  if (client.supportsContinuousUpdates && firstContinuousUpdates)
     supportsContinuousUpdates();
-  if (cp.supportsLEDState && firstLEDState)
+  if (client.supportsLEDState && firstLEDState)
     supportsLEDState();
-  if (cp.supportsQEMUKeyEvent && firstQEMUKeyEvent)
+  if (client.supportsQEMUKeyEvent && firstQEMUKeyEvent)
     supportsQEMUKeyEvent();
 }
 
@@ -86,6 +86,6 @@
 void SMsgHandler::setDesktopSize(int fb_width, int fb_height,
                                  const ScreenSet& layout)
 {
-  cp.setDimensions(fb_width, fb_height, layout);
+  client.setDimensions(fb_width, fb_height, layout);
 }