Issue #1186 - Change names that appear in the 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" ) ;
+  ImmediateSession session( session_handle, "fail" ) ;
   return ERROR_INSTALL_FAILURE ;
 }