show used OpenSSL library version in debug window

src/qt/rpcconsole.cpp

@@ -14,6 +14,7 @@
 #include <QScrollBar>
 
 #include <boost/tokenizer.hpp>
+#include <openssl/crypto.h>
 
 // TODO: make it possible to filter out categories (esp debug messages when implemented)
 // TODO: receive errors and debug messages through ClientModel
@@ -119,6 +120,9 @@ RPCConsole::RPCConsole(QWidget *parent) :
 
     connect(ui->clearButton, SIGNAL(clicked()), this, SLOT(clear()));
 
+    // set OpenSSL version label
+    ui->openSSLVersion->setText(SSLeay_version(SSLEAY_VERSION));
+
     startExecutor();
 
     clear();