Win32: Rewrite rm.bat

`rd` cannot remove ordinary files, use `del` or `rd` for each entry.

Author: nobu

win32/rm.bat

@@ -1,18 +1,15 @@
 @echo off
+setlocal
+set recursive=
 :optloop
 if "%1" == "-f" shift
 if "%1" == "-r" (shift & set "recursive=1" & goto :optloop)
-if "%recursive%" == "1" goto :recursive
 :begin
 if "%1" == "" goto :end
 set p=%1
-if exist "%p:/=\%" for %%I in ("%p:/=\%") do @del "%%I"
+if exist "%p:/=\%" for %%I in ("%p:/=\%") do (
+    del /q "%%I" || if "%recursive%" == "1" rd /s /q "%%I"
+) 2> nul
 shift
 goto :begin
-:recursive
-if "%1" == "" goto :end
-set p=%1
-if exist "%p:/=\%" rd /s /q "%p:/=\%"
-shift
-goto :recursive
 :end