Setting WINVER to 0x400 to shut up the obnoxious warning and to prevent

accidental use of Win 5.0 API's that will not work on older Win machines

config/WIN32

@@ -123,7 +123,7 @@ RTL_FLAGS=-MDd         # Dynamically linked, multithreaded MSVC4.0 debug RTL
 #//
 #//------------------------------------------------------------------------
 OS_CFLAGS=$(OPTIMIZER) $(RTL_FLAGS) -W3 -nologo -D_X86_ -D_WINDOWS  -DWIN32 \
-            -DXP_PC -DHW_THREADS
+            -DXP_PC -DHW_THREADS -DWINVER=0x400
 
 OS_CFLAGS=$(OS_CFLAGS) -DMSVC4