freecad: fix and rebuild for Python 3.8.

srcpkgs/freecad/patches/090-py38.patch

@@ -0,0 +1,22 @@
+From 174011749d836f3b6c6ae2630f53b2f4c1f9d3fc Mon Sep 17 00:00:00 2001
+From: Richard <hobbes1069@gmail.com>
+Date: Thu, 17 Oct 2019 11:20:10 -0500
+Subject: [PATCH] Update swigpyrun.in for Python 3.8
+
+In Python 3.8 some functions related to thread state were intentionally made private.
+
+This fix (specific to FreeCAD) was suggested here:
+
+https://bugs.python.org/issue35886
+
+--- src/Base/swigpyrun.inl
++++ src/Base/swigpyrun.inl
+@@ -72,7 +72,7 @@ void cleanupSWIG_T(const char* TypeName)
+ 
+     PyObject *module, *dict;
+     PyInterpreterState *interp = PyThreadState_GET()->interp;
+-    PyObject *modules = interp->modules;
++    PyObject *modules = PyImport_GetModuleDict();
+     module = PyDict_GetItemString(modules, "__builtin__");
+     if (module != NULL && PyModule_Check(module)) {
+         dict = PyModule_GetDict(module);

srcpkgs/freecad/template

@@ -1,7 +1,7 @@
 # Template file for 'freecad'
 pkgname=freecad
 version=0.18.4
-revision=1
+revision=2
 wrksrc="FreeCAD-${version}"
 build_style=cmake