Use std::locale::classic() globally

This is a better alternative when imbuing streams

3d-viewer/3d_cache/sg/ifsg_api.cpp

@@ -103,7 +103,7 @@ bool S3D::WriteVRML( const char* filename, bool overwrite, SGNODE* aTopNode,
         return false;
     }
 
-    op.imbue( std::locale( "C" ) );
+    op.imbue( std::locale::classic() );
     op << "#VRML V2.0 utf8\n";
 
     if( renameNodes )

common/plugins/altium/altium_parser.cpp

@@ -142,7 +142,7 @@ double ALTIUM_PARSER::PropertiesReadDouble(
 
     // Locale independent str -> double conversation
     std::istringstream istr( (const char*) value->second.mb_str() );
-    istr.imbue( std::locale( "C" ) );
+    istr.imbue( std::locale::classic() );
 
     double doubleValue;
     istr >> doubleValue;

pcbnew/exporters/export_vrml.cpp

@@ -1686,7 +1686,7 @@ bool PCB_EDIT_FRAME::ExportVRML_File( const wxString& aFullFileName, double aMMt
                 throw( std::runtime_error( ostr.str().c_str() ) );
             }
 
-            output_file.imbue( std::locale( "C" ) );
+            output_file.imbue( std::locale::classic() );
 
             // Begin with the usual VRML boilerplate
             wxString fn = aFullFileName;