Issue2492 spawn infiltration (#2511)

This commit simulates in E+ infiltration for zones not modeled using ThermalZone.mo. For #2492

* Suppressed compiler warnings from MSVC

* Changed call to _stat on Windows

* For MSVC, added EXTERNAL_FUNCTION_EXPORT to avoid warning in MSVC

Buildings/Resources/ReferenceResults/Dymola/Buildings_ThermalZones_EnergyPlus_Validation_ThermalZone_Infiltration.txt

@@ -0,0 +1,17 @@
+last-generated=2021-05-26
+statistics-initialization=
+{
+  "nonlinear": "1, 1",
+  "numerical Jacobians": "0"
+}
+statistics-simulation=
+{
+  "linear": "0, 0, 0, 0, 0, 0, 0, 0, 0, 0",
+  "nonlinear": "1, 1",
+  "number of continuous time states": "82",
+  "numerical Jacobians": "0"
+}
+time=[0e+00, 8.64e+04]
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