Move FileLister* to CLI doxygen-module.

I forgot to update the doxygen module when moving FileLister* to
CLI. Also add CLI doxygen group for ThreadExecutor.

cli/filelister.h

@@ -22,7 +22,7 @@
 #include <vector>
 #include <string>
 
-/// @addtogroup Core
+/// @addtogroup CLI
 /// @{
 
 /**

cli/filelister_unix.h

@@ -23,7 +23,7 @@
 #include <string>
 #include "filelister.h"
 
-/// @addtogroup Core
+/// @addtogroup CLI
 /// @{
 
 

cli/filelister_win32.h

@@ -23,7 +23,7 @@
 #include <string>
 #include "filelister.h"
 
-/// @addtogroup Core
+/// @addtogroup CLI
 /// @{
 
 

cli/threadexecutor.h

@@ -25,6 +25,9 @@
 #include "settings.h"
 #include "errorlogger.h"
 
+/// @addtogroup CLI
+/// @{
+
 /**
  * This class will take a list of filenames and settings and check then
  * all files using threads.
@@ -95,4 +98,6 @@ private:
     void operator=(const ThreadExecutor &);
 };
 
+/// @}
+
 #endif // THREADEXECUTOR_H