GUI for --disable-wallet compiles and -disablewallet mode

There is not much in the GUI to be done without wallet,
though it's possible to change options, watch the sync process,
and use the debug console.

So embed the debug console in the main window.

src/qt/bitcoingui.h

@@ -5,6 +5,10 @@
 #ifndef BITCOINGUI_H
 #define BITCOINGUI_H
 
+#if defined(HAVE_CONFIG_H)
+#include "bitcoin-config.h"
+#endif
+
 #include <QMainWindow>
 #include <QMap>
 #include <QSystemTrayIcon>
@@ -43,14 +47,15 @@ public:
     */
     void setClientModel(ClientModel *clientModel);
 
+#ifdef ENABLE_WALLET
     /** Set the wallet model.
         The wallet model represents a bitcoin wallet, and offers access to the list of transactions, address book and sending
         functionality.
     */
     bool addWallet(const QString& name, WalletModel *walletModel);
     bool setCurrentWallet(const QString& name);
-
     void removeAllWallets();
+#endif
 
 protected:
     void changeEvent(QEvent *e);
@@ -125,11 +130,6 @@ public slots:
     void setNumConnections(int count);
     /** Set number of blocks shown in the UI */
     void setNumBlocks(int count, int nTotalBlocks);
-    /** Set the encryption status as shown in the UI.
-       @param[in] status            current encryption status
-       @see WalletModel::EncryptionStatus
-    */
-    void setEncryptionStatus(int status);
 
     /** Notify the user of an event from the core network or transaction handling code.
        @param[in] title     the message box / notification title
@@ -140,12 +140,21 @@ public slots:
     */
     void message(const QString &title, const QString &message, unsigned int style, bool *ret = NULL);
 
+#ifdef ENABLE_WALLET
+    /** Set the encryption status as shown in the UI.
+       @param[in] status            current encryption status
+       @see WalletModel::EncryptionStatus
+    */
+    void setEncryptionStatus(int status);
+
     bool handlePaymentRequest(const SendCoinsRecipient& recipient);
 
     /** Show incoming transaction notification for new transactions. */
     void incomingTransaction(const QString& date, int unit, qint64 amount, const QString& type, const QString& address);
+#endif
 
 private slots:
+#ifdef ENABLE_WALLET
     /** Switch to overview (home) page */
     void gotoOverviewPage();
     /** Switch to history (transactions) page */
@@ -160,6 +169,9 @@ private slots:
     /** Show Sign/Verify Message dialog and switch to verify message tab */
     void gotoVerifyMessageTab(QString addr = "");
 
+    /** Show open dialog */
+    void openClicked();
+#endif
     /** Show configuration dialog */
     void optionsClicked();
     /** Show about dialog */
@@ -168,8 +180,6 @@ private slots:
     /** Handle tray icon clicked */
     void trayIconActivated(QSystemTrayIcon::ActivationReason reason);
 #endif
-    /** Show open dialog */
-    void openClicked();
 
     /** Show window if hidden, unminimize when minimized, rise when obscured or show if hidden and fToggleHidden is true */
     void showNormalIfMinimized(bool fToggleHidden = false);