Core: Move PyCXX library to src/3rdParty.

src/Tools/_TEMPLATE_/App/CMakeLists.txt

@@ -2,6 +2,7 @@
 include_directories(
     ${Boost_INCLUDE_DIRS}
     ${OCC_INCLUDE_DIR}
+    ${PYCXX_INCLUDE_DIR}
     ${Python3_INCLUDE_DIRS}
     ${ZLIB_INCLUDE_DIR}
     ${XercesC_INCLUDE_DIRS}

src/Tools/_TEMPLATE_/Gui/CMakeLists.txt

@@ -5,6 +5,7 @@ include_directories(
     ${Boost_INCLUDE_DIRS}
     ${COIN3D_INCLUDE_DIRS}
     ${ZLIB_INCLUDE_DIR}
+    ${PYCXX_INCLUDE_DIR}
     ${Python3_INCLUDE_DIRS}
     ${XercesC_INCLUDE_DIRS}
 )

src/Tools/embedded/Qt/cxx/CMakeLists.txt

@@ -32,6 +32,7 @@ add_definitions(-DBOOST_ALL_DYN_LINK)
 include_directories(
     ${Boost_INCLUDE_DIRS}
     #${COIN3D_INCLUDE_DIRS}
+    ${PYCXX_INCLUDE_DIR}
     ${Python3_INCLUDE_DIRS}
     ${Qt5Core_INCLUDE_DIRS}
     ${Qt5Gui_INCLUDE_DIRS}