Cleanup: reorganize doxygen modules

- Nest compositor pages under the compositor module
- Nest GUI, DNA/RNA & externformats modules under Blender.
- Remove modules from intern which no longer exist.
- Add intern modules (atomic, eigen, glew-mx, libc_compat, locale,
  numaapi, rigidbody, sky, utfconv).
- Use 'intern_' prefix for intern modules since some of the modules
  use generic terms such as locale & atomic.

intern/iksolver/extern/IK_solver.h

@@ -19,7 +19,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 /**

intern/iksolver/intern/IK_Math.h

@@ -18,6 +18,10 @@
  * Original author: Laurence
  */
 
+/** \file
+ * \ingroup intern_iksolver
+ */
+
 #pragma once
 
 #include <Eigen/Core>

intern/iksolver/intern/IK_QJacobian.cpp

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #include "IK_QJacobian.h"

intern/iksolver/intern/IK_QJacobian.h

@@ -19,7 +19,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #pragma once

intern/iksolver/intern/IK_QJacobianSolver.cpp

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #include <stdio.h>

intern/iksolver/intern/IK_QJacobianSolver.h

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #pragma once

intern/iksolver/intern/IK_QSegment.cpp

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #include "IK_QSegment.h"

intern/iksolver/intern/IK_QSegment.h

@@ -19,7 +19,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #pragma once

intern/iksolver/intern/IK_QTask.cpp

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #include "IK_QTask.h"

intern/iksolver/intern/IK_QTask.h

@@ -19,7 +19,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #pragma once

intern/iksolver/intern/IK_Solver.cpp

@@ -18,7 +18,7 @@
  */
 
 /** \file
- * \ingroup iksolver
+ * \ingroup intern_iksolver
  */
 
 #include "../extern/IK_solver.h"