Converted win32 to new keyboard state tracking design. Also

changed locking to screen so that keys no longer count (only
mouse buttons and scroll lock toggled on).  This is to deal
with the unreliability of key event reporting which can leave
us locked to a screen with no key physically pressed.  The
result of this is that clients get key repeats and releases
without the corresponding key press.  CKeyState handles this
by discarding repeat/release events on keys it hasn't seen go
down.  Also made a few other minor fixes to win32 keyboard
handling.

lib/server/CServer.cpp

@@ -294,7 +294,7 @@ UInt32
 CServer::getActivePrimarySides() const
 {
 	UInt32 sides = 0;
-	if (!isLockedToScreen()) {
+	if (!isLockedToScreenServer()) {
 		if (getNeighbor(m_primaryClient, kLeft) != NULL) {
 			sides |= kLeftMask;
 		}
@@ -312,7 +312,7 @@ CServer::getActivePrimarySides() const
 }
 
 bool
-CServer::isLockedToScreen() const
+CServer::isLockedToScreenServer() const
 {
 	// locked if scroll-lock is toggled on
 	if ((m_primaryClient->getToggleMask() & KeyModifierScrollLock) != 0) {
@@ -320,6 +320,18 @@ CServer::isLockedToScreen() const
 		return true;
 	}
 
+	// not locked
+	return false;
+}
+
+bool
+CServer::isLockedToScreen() const
+{
+	// locked if we say we're locked
+	if (isLockedToScreenServer()) {
+		return true;
+	}
+
 	// locked if primary says we're locked
 	if (m_primaryClient->isLockedToScreen()) {
 		return true;