Made releaseKeys() only synthesize key releases for those keys

that synergy synthesized a press for, not keys that the user
is physically pressing.

lib/common/Makefile.am

@@ -21,6 +21,7 @@ EXTRA_DIST =				\
 	IInterface.h			\
 	Version.h				\
 	common.h				\
+	stdbitset.h				\
 	stdfstream.h			\
 	stdistream.h			\
 	stdlist.h				\

lib/common/common.dsp

@@ -103,6 +103,10 @@ SOURCE=.\IInterface.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\stdbitset.h
+# End Source File
+# Begin Source File
+
 SOURCE=.\stdfstream.h
 # End Source File
 # Begin Source File

lib/common/stdbitset.h

@@ -0,0 +1,17 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2002 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "stdpre.h"
+#include <bitset>
+#include "stdpost.h"