Updated installer with custom action

installer/src/installer-lib/test/custom-action-fail.cpp

+/**
+ * \file close_application.cpp
+ */
+
+#include "session.h"
+
+//-------------------------------------------------------
+// Fail
+//-------------------------------------------------------
+/**
+ * A custom action that always and immediately fails.
+ * Use during testing to ensure that the installer terminates.
+ *
+ * \param[in] session_handle
+ *     Windows installer session handle
+ *
+ * \return 
+ *    An integer interpreted as a custom action return value.
+ *   
+ * \sa
+ *   - MSDN [Custom Action Return Values](http://msdn.microsoft.com/en-us/library/aa368072%28v=vs.85%29.aspx)
+ */
+extern "C" UINT __stdcall 
+fail( MSIHANDLE session_handle )
+{
+  // Instantiate the session object in order to get begin/end log entries.
+  Immediate_Session session( session_handle, "fail" ) ;
+  return ERROR_INSTALL_FAILURE ;
+}