Auto merge of #9627 - Jayflux:addWindowsOptionInTriple, r=larsbergstrom

Now we use python for os_type, we need to catch 'windows' as well as …

…'mingw65_nt- fixes #9597

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python/servo/command_base.py

@@ -41,7 +41,7 @@ def host_triple():
         os_type = "apple-darwin"
     elif os_type == "android":
         os_type = "linux-androideabi"
-    elif os_type.startswith("mingw64_nt-"):
+    elif os_type == "windows" or os_type.startswith("mingw64_nt-"):
         os_type = "pc-windows-gnu"
     else:
         os_type = "unknown"