run as daemon without GUI,

hooked wxApp::Initialize to ignore gtk-init-check failure if no GUI,
fork to daemonize,
rpc getinfo, getconnectioncount, getbalance, getgenerate, setgenerate,
-- version 0.2.6

util.h

@@ -121,6 +121,7 @@ extern bool fPrintToDebugger;
 extern char pszSetDataDir[MAX_PATH];
 extern bool fShutdown;
 extern bool fDaemon;
+extern bool fCommandLine;
 
 void RandAddSeed();
 void RandAddSeedPerfmon();