adjusted folder of examples.

filesystem/FixFilenameTest.cpp

@@ -0,0 +1,16 @@
+#include<hgl/filesystem/Filename.h>
+#include<iostream>
+
+using namespace std;
+using namespace hgl;
+using namespace hgl::filesystem;
+
+void main()
+{
+    constexpr os_char incorrect_filename[]=OS_TEXT("c:/win95\\\\ms-dos");
+
+    os_out<<OS_TEXT("fix filename test that they have a few problems.\n\n");
+
+    os_out<<OS_TEXT("origin filename: ")<<incorrect_filename<<endl;
+    os_out<<OS_TEXT(" fixed filename: ")<<FixFilename(incorrect_filename).c_str()<<endl;
+}