+ don't pass std::ios::modes to memory_mapped_file

plugins/input/shape/dbffile.cpp

@@ -42,7 +42,11 @@ dbf_file::dbf_file(std::string const& file_name)
    :num_records_(0),
     num_fields_(0),
     record_length_(0),
+#ifdef SHAPE_MEMORY_MAPPED_FILE
+    file_(file_name),
+#else
     file_(file_name,std::ios::in | std::ios::binary),
+#endif
     record_(0)
 {
    if (file_.is_open())

plugins/input/shape/shapefile.hpp

@@ -147,8 +147,14 @@ public:
     shape_file() {}
 
     shape_file(std::string  const& file_name)
-        : file_(file_name,std::ios::in | std::ios::binary) {}
-
+        : 
+#ifdef SHAPE_MEMORY_MAPPED_FILE
+        file_(file_name)
+#else
+        file_(file_name,std::ios::in | std::ios::binary)
+#endif
+    {}
+    
     ~shape_file() {}
 
     inline bool is_open()