0028838: Configuration - undefine macros coming from X11 headers in place of collision

The macros Status, Convex, Opposite, FillSolid (coming from X11 headers)
are now undefined in place of definition of methods with same name in OCCT headers.
The usage of variables with name Status is now avoided.

GL_GLEXT_LEGACY is now defined only if not already defined.

The macros AddPrinter (coming from WinAPI headers) is now undefined
within Message_Messenger class definition having method with the same name.
CurrentDirectory macro is now undefined in OSD_Process.hxx.

src/TopOpeBRepBuild/FILES

@@ -41,7 +41,7 @@ TopOpeBRepBuild_FaceBuilder.hxx
 TopOpeBRepBuild_fctwes.cxx
 TopOpeBRepBuild_ffsfs.cxx
 TopOpeBRepBuild_ffwesk.cxx
-TopOpeBRepBuild_Fill.hxx
+TopOpeBRepBuild_Fill.pxx
 TopOpeBRepBuild_FREGU.cxx
 TopOpeBRepBuild_FuseFace.cxx
 TopOpeBRepBuild_FuseFace.hxx
@@ -111,7 +111,7 @@ TopOpeBRepBuild_SolidBuilder.hxx
 TopOpeBRepBuild_SplitEdge.hxx
 TopOpeBRepBuild_SplitFace.hxx
 TopOpeBRepBuild_SplitShapes.hxx
-TopOpeBRepBuild_SplitSolid.hxx
+TopOpeBRepBuild_SplitSolid.pxx
 TopOpeBRepBuild_SREGU.cxx
 TopOpeBRepBuild_Tools.cxx
 TopOpeBRepBuild_Tools.hxx

src/TopOpeBRepBuild/TopOpeBRepBuild_Builder.cxx

@@ -75,9 +75,9 @@ Standard_EXPORT void debchangesplit(const Standard_Integer i) {cout<<"++ debchan
 static  Standard_Integer STATIC_SOLIDINDEX = 0;
 #include <TopOpeBRepBuild_SplitEdge.hxx>
 #include <TopOpeBRepBuild_SplitFace.hxx>
-#include <TopOpeBRepBuild_SplitSolid.hxx>
+#include "TopOpeBRepBuild_SplitSolid.pxx"
 #include <TopOpeBRepBuild_SplitShapes.hxx>
-#include <TopOpeBRepBuild_Fill.hxx>
+#include "TopOpeBRepBuild_Fill.pxx"
 
 Standard_EXPORT TopOpeBRepBuild_Builder* GLOBAL_PBUILDER;
 

src/TopOpeBRepBuild/TopOpeBRepBuild_Builder.hxx

@@ -52,8 +52,6 @@
 class TopOpeBRepDS_HDataStructure;
 class Standard_NoSuchObject;
 class TopOpeBRepBuild_HBuilder;
-class TopOpeBRepDS_BuildTool;
-class TopoDS_Shape;
 class TopOpeBRepTool_ShapeExplorer;
 class TopOpeBRepBuild_ShapeSet;
 class TopOpeBRepBuild_EdgeBuilder;
@@ -67,11 +65,12 @@ class TopOpeBRepBuild_ShellFaceSet;
 class TopOpeBRepDS_SurfaceIterator;
 class TopOpeBRepDS_CurveIterator;
 class TopoDS_Vertex;
-class TopoDS_Edge;
 class gp_Pnt;
-class TopoDS_Face;
-class TCollection_AsciiString;
 
+// resolve name collisions with X11 headers
+#ifdef FillSolid
+  #undef FillSolid
+#endif
 
 //! The Builder  algorithm    constructs   topological
 //! objects  from   an    existing  topology  and  new