cad/kicad-devel: Add a patch for compatibility with opencascade 7.6

cad/kicad-devel/files/patch-plugins_3d_oce_loadmodel.cpp

@@ -0,0 +1,45 @@
+--- plugins/3d/oce/loadmodel.cpp.orig	2021-11-13 17:46:24 UTC
++++ plugins/3d/oce/loadmodel.cpp
+@@ -74,6 +74,8 @@
+ #include <TDF_LabelSequence.hxx>
+ #include <TDF_ChildIterator.hxx>
+
++#include <Standard_Version.hxx>
++
+ #include "plugins/3dapi/ifsg_all.h"
+
+ // log mask for wxLogTrace
+@@ -960,8 +962,10 @@ bool processFace( const TopoDS_Face& face, DATA& data,
+     else
+         S3D::AddSGNodeRef( vshape.GetRawPtr(), ocolor );
+
++#if OCC_VERSION_HEX < 0x070600
+     const TColgp_Array1OfPnt&    arrPolyNodes = triangulation->Nodes();
+     const Poly_Array1OfTriangle& arrTriangles = triangulation->Triangles();
++#endif
+
+     std::vector< SGPOINT > vertices;
+     std::vector< int > indices;
+@@ -970,14 +974,22 @@ bool processFace( const TopoDS_Face& face, DATA& data,
+
+     for( int i = 1; i <= triangulation->NbNodes(); i++ )
+     {
++#if OCC_VERSION_HEX < 0x070600
+         gp_XYZ v( arrPolyNodes(i).Coord() );
++#else
++	gp_XYZ v( triangulation->Node(i).Coord() );
++#endif
+         vertices.emplace_back( v.X(), v.Y(), v.Z() );
+     }
+
+     for( int i = 1; i <= triangulation->NbTriangles(); i++ )
+     {
+         int a, b, c;
++#if OCC_VERSION_HEX < 0x070600
+         arrTriangles( i ).Get( a, b, c );
++#else
++	triangulation->Triangle(i).Get(a, b, c);
++#endif
+         a--;
+
+         if( reverse )