vsdownload: kits -> Windows Kits

So that the dest dir is valid for clang /winsysroot without installation
on Unix and Windows.

install.sh

@@ -43,7 +43,7 @@ ln_s() {
 if [ -n "$VC_ZIP" ]; then
     unzip $VC_ZIP
 fi
-ln_s kits "Windows Kits"
+ln_s "Windows Kits" kits
 ln_s VC vc
 ln_s Tools vc/tools
 ln_s MSVC vc/tools/msvc

vsdownload.py

@@ -605,14 +605,12 @@ def moveVCSDK(unpack, dest):
     # Move the VC and Program Files\Windows Kits\10 directories
     # out from the unpack directory, allowing the rest of unpacked
     # files to be removed.
-    makedirs(os.path.join(dest, "kits"))
     mergeTrees(os.path.join(unpack, "VC"), os.path.join(dest, "VC"))
     kitsPath = unpack
     # msiexec extracts to Windows Kits rather than Program Files\Windows Kits
     if sys.platform != "win32":
         kitsPath = os.path.join(kitsPath, "Program Files")
-    kitsPath = os.path.join(kitsPath, "Windows Kits", "10")
-    mergeTrees(kitsPath, os.path.join(dest, "kits", "10"))
+    mergeTrees(os.path.join(kitsPath, "Windows Kits"), os.path.join(dest, "Windows Kits"))
 
     # Move other VC components directories:
     # The DIA SDK isn't necessary for normal use, but can be used when e.g.