0030091: Configuration - allow cross-compilation from Linux (case sensitive filesystem) to x86_64-w64-mingw32

Names of Windows header files are corrected to be lower case to match their actual names on Windows (except Windows.h) and MinGW.
Files COMMANDWINDOW.h and MAINWINDOW.h in Draw package are renamed to CamelCase according to names of corresponding CXX files.

src/Draw/CommandWindow.cxx

@@ -17,9 +17,9 @@
 #ifdef _WIN32
 #include <windows.h>
 
-#include <CommandWindow.h>
+#include <COMMANDWINDOW.h>
 #include <Draw_Window.hxx>
-#include <MainWindow.h>
+#include <MAINWINDOW.h>
 #include <Draw_Appli.hxx>
 #include <TCollection_AsciiString.hxx>
 

src/Draw/FILES

@@ -1,5 +1,5 @@
 CommandWindow.cxx
-COMMANDWINDOW.h
+CommandWindow.h
 Draw.cxx
 Draw.hxx
 Draw_Appli.hxx
@@ -75,4 +75,4 @@ DrawRessource.h
 init.cxx
 init.h
 MainWindow.cxx
-MAINWINDOW.h
+MainWindow.h

src/Draw/MainWindow.h

@@ -26,7 +26,7 @@
 /*
 ** PROCEDURES DE MAIN WINDOW
 */
-#include <Windows.h>
+#include <windows.h>
 
 LRESULT APIENTRY WndProc(HWND, UINT, WPARAM, LPARAM);
 BOOL CreateProc(HWND);