better logging in PCSC and first engine release; refs #11

doc/examples/openssl-engine-demo.cxx

@@ -0,0 +1,37 @@
+/*! @file
+
+    @id $Id$
+*/
+//       1         2         3         4         5         6         7         8
+// 45678901234567890123456789012345678901234567890123456789012345678901234567890
+
+#include <openssl-engine.hxx>
+
+#include <iostream>
+
+class TestEngine: virtual public openssl::Engine {
+      
+  public:
+
+    virtual const char* id() {
+      OPENSSL_LOG("log");
+      return "TestEngine_ID";
+    }
+    virtual const char* name() {
+      OPENSSL_LOG("log");
+      return "TestEngine_NAME";
+    }
+};
+
+int main(int, char**) {
+  {
+    openssl::RegisterEngine testEngine(new TestEngine);
+    
+    for (ENGINE* e(ENGINE_get_first()); e; e = ENGINE_get_next(e)) {
+      std::cout<<"Found Engine: "<<ENGINE_get_id(e)<<std::endl;
+    }
+  }
+  
+  ENGINE_cleanup();
+  return 0;
+}