Got rid of sPluginManagerState

/pluginlist now also shows the number of active plugins
Fixed crash caused by lingering bound Lua commands http://forum.mc-server.org/showthread.php?tid=212&pid=2541#pid2541
Added error messages when binding commands to an invalid plugin

git-svn-id: http://mc-server.googlecode.com/svn/trunk@440 0a769ca7-a7f5-676a-18bf-c427514a06d6

source/cPlugin.cpp

@@ -10,6 +10,7 @@
 cPlugin::cPlugin()
 	: m_Version( 0 )
 	, m_Language( E_CPP )
+	, m_bCanBindCommands( false )
 {
 }