begin integration with bitcoin upstream

gui/include/bitcoinaddressvalidator.h

@@ -0,0 +1,21 @@
+#ifndef BITCOINADDRESSVALIDATOR_H
+#define BITCOINADDRESSVALIDATOR_H
+
+#include <QRegExpValidator>
+
+#include <base58.h>
+
+class BitcoinAddressValidator : public QRegExpValidator
+{
+    Q_OBJECT
+public:
+    explicit BitcoinAddressValidator(QObject *parent = 0);
+
+    static const QString valid_chars;
+signals:
+
+public slots:
+
+};
+
+#endif // BITCOINADDRESSVALIDATOR_H