Modernise the mat lib header, remove 'using std'

simgear/scene/material/matlib.cxx

@@ -77,7 +77,7 @@ bool SGMaterialLib::load( const string &fg_root, const string& mpath,
         if (!strcmp(node->getName(), "material")) {
             SGSharedPtr<SGMaterial> m = new SGMaterial(options.get(), node, prop_root);
 
-            vector<SGPropertyNode_ptr>names = node->getChildren("name");
+            std::vector<SGPropertyNode_ptr>names = node->getChildren("name");
             for ( unsigned int j = 0; j < names.size(); j++ ) {
                 string name = names[j]->getStringValue();
                 // cerr << "Material " << name << endl;

simgear/scene/material/matlib.hxx

@@ -25,10 +25,6 @@
 #define _MATLIB_HXX
 
 
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
 #include <simgear/compiler.h>
 
 #include <simgear/structure/SGSharedPtr.hxx>
@@ -37,20 +33,11 @@
 #include <map>			// STL associative "array"
 #include <vector>		// STL "array"
 
-#include <osg/Geode>
-
 class SGMaterial;
 class SGPropertyNode;
 
-using std::string;
-using std::map;
-using std::vector;
-using std::less;
-
-namespace simgear
-{
-class Effect;
-}
+namespace simgear { class Effect; }
+namespace osg { class Geode; }
 
 // Material management class
 class SGMaterialLib {
@@ -60,7 +47,7 @@ private:
     // associative array of materials
     typedef std::vector< SGSharedPtr<SGMaterial> > material_list;    
     typedef material_list::iterator material_list_iterator;
-    typedef map < string,  material_list> material_map;
+    typedef std::map < std::string,  material_list> material_map;
     typedef material_map::iterator material_map_iterator;
     typedef material_map::const_iterator const_material_map_iterator;
 
@@ -72,10 +59,10 @@ public:
     SGMaterialLib ( void );
 
     // Load a library of material properties
-    bool load( const string &fg_root, const string& mpath,
+    bool load( const std::string &fg_root, const std::string& mpath,
             SGPropertyNode *prop_root );
     // find a material record by material name
-    SGMaterial *find( const string& material );
+    SGMaterial *find( const std::string& material );
 
     material_map_iterator begin() { return matlib.begin(); }
     const_material_map_iterator begin() const { return matlib.begin(); }

simgear/scene/tgdb/apt_signs.cxx

@@ -46,6 +46,7 @@
 #define SIGN "OBJECT_SIGN: "
 
 using std::vector;
+using std::string;
 using namespace simgear;
 
 // for temporary storage of sign elements