Revert "[PD] App: precompiled header fixes"

src/Mod/PartDesign/App/AppPartDesign.cpp

@@ -63,7 +63,7 @@ extern PyObject* initModule();
 }
 
 /* Python entry */
-PyMOD_INIT_FUNC(PartDesign)
+PyMOD_INIT_FUNC(_PartDesign)
 {
     // load dependent module
     try {

src/Mod/PartDesign/App/AppPartDesignPy.cpp

@@ -32,7 +32,7 @@ namespace PartDesign {
 class Module : public Py::ExtensionModule<Module>
 {
 public:
-    Module() : Py::ExtensionModule<Module>("PartDesign")
+    Module() : Py::ExtensionModule<Module>("_PartDesign")
     {
         add_varargs_method("makeFilletArc",&Module::makeFilletArc,
             "makeFilletArc(...) -- Fillet arc."

src/Mod/PartDesign/App/CMakeLists.txt

@@ -144,16 +144,16 @@ SET(PartDesign_SRCS
     ${Python_SRCS}
 )
 
-if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${PartDesign_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(PartDesign PreCompiled.h PreCompiled.cpp PCH_SRCS)
-endif(FREECAD_USE_PCH)
-
 add_library(PartDesign SHARED ${PartDesign_SRCS})
 target_link_libraries(PartDesign ${PartDesign_LIBS})
 
-SET_BIN_DIR(PartDesign PartDesign /Mod/PartDesign)
+if(FREECAD_USE_PCH)
+    add_definitions(-D_PreComp_)
+    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PartDesign_CPP_SRCS ${PartDesign_SRCS})
+    ADD_MSVC_PRECOMPILED_HEADER(PartDesign PreCompiled.h PreCompiled.cpp PartDesign_CPP_SRCS)
+endif(FREECAD_USE_PCH)
+
+SET_BIN_DIR(PartDesign _PartDesign /Mod/PartDesign)
 SET_PYTHON_PREFIX_SUFFIX(PartDesign)
 
 INSTALL(TARGETS PartDesign DESTINATION ${CMAKE_INSTALL_LIBDIR})

src/Mod/PartDesign/App/PreCompiled.cpp

@@ -20,4 +20,5 @@
  *                                                                         *
  ***************************************************************************/
 
+
 #include "PreCompiled.h"

src/Mod/PartDesign/__init__.py

@@ -1,3 +1,3 @@
-import PartDesign
-makeFilletArc = PartDesign.makeFilletArc
-
+import _PartDesign
+makeFilletArc = _PartDesign.makeFilletArc
+