Land #5960, @wchen-r7's MSU extractor

tools/extract_msu.bat

@@ -0,0 +1,36 @@
+@echo off
+@setlocal EnableDelayedExpansion
+
+@set arg=%~1
+
+if [%arg%] == [] (
+	echo Argument Missing:
+	echo You must provide a directory that contains
+	echo all the Windows patches in *.msu format.
+	echo To Download patches manually, please go:
+	echo http://mybulletins.technet.microsoft.com/BulletinPages/Dashboard
+	exit /B
+)
+
+if not "!arg:~-1,1!" == "\" (
+	@set arg=!arg!\
+)
+
+
+for /f %%f in ('dir /B %arg%') DO (
+	@set fname=%%f
+	@set lastfourchars=!fname:~-4,4!
+	if "!lastfourchars!" == ".msu" (
+		@set newname=!fname:~0,-4!
+		mkdir %arg%!newname!
+		mkdir %arg%!newname!\extracted
+		expand /F:* %arg%!fname! %arg%!newname!
+		expand /F:* %arg%!newname!\!newname!.cab %arg%!newname!\extracted
+	)
+
+)
+
+echo Done!
+echo Now go to %arg%,
+echo and then use the search feature from Windows to
+echo find the files you're interested in.