Fixed compilation errors (VC++ 2005).

Modular_arithmetic/src/CGAL/Residue_type.cpp

@@ -18,7 +18,7 @@
 // Author(s)     : Michael Hemmer
 
 
-#include <CGAL/Modular_arithmetic/Residue_type.h>
+#include <CGAL/residue.h>
 
 namespace CGAL{
 #ifdef CGAL_HAS_THREADS

PDB/src/CGALPDB/Heterogen.cpp

@@ -20,6 +20,7 @@
 
 #include <CGAL/PDB/Heterogen.h>
 #include <CGAL/PDB/internal/Error_logger.h>
+#include <CGAL/PDB/internal/pdb_utils.h>
 #include <iostream>
 #include <limits>
 

PDB/src/CGALPDB/Model.cpp

@@ -21,6 +21,7 @@
 #include <CGAL/PDB/Model.h>
 #include <cassert>
 #include <CGAL/PDB/internal/pdb_utils.h>
+#include <CGAL/PDB/internal/Error_logger.h>
 #include <cstdio>
 using std::sscanf;
 CGAL_PDB_BEGIN_NAMESPACE

PDB/src/CGALPDB/align.cpp

@@ -1,7 +1,6 @@
 #include <CGAL/PDB/Chain.h>
 #include <CGAL/PDB/iterator.h>
 #include <CGAL/PDB/align.h>
-#include <CGAL/PDB/align_generic.h>
 #include <cassert>