Merge topic 'matplotlib-3.2.1'

78927db6 paraview: fix python enable logic
8fdabf25 cmake: add pkgconf to the project list
0c687f53

 superbuild: bump for matplotlib 3.2.1
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !712

CMakeLists.txt

@@ -108,6 +108,7 @@ function (superbuild_find_projects var)
       lapack
       libxml2
       mili
+      pkgconf
       rapidjson
       scipy)
 

projects/paraview.cmake

@@ -88,8 +88,8 @@ endif ()
 
 set(PARAVIEW_USE_PYTHON ${python_enabled})
 if (python_enabled AND
-    ((USE_SYSTEM_python2 AND NOT python2_FIND_LIBRARIES) OR
-     (USE_SYSTEM_python3 AND NOT python3_FIND_LIBRARIES)))
+    ((python2_enabled AND USE_SYSTEM_python2 AND NOT python2_FIND_LIBRARIES) OR
+     (python3_enabled AND USE_SYSTEM_python3 AND NOT python3_FIND_LIBRARIES)))
   set(PARAVIEW_USE_PYTHON OFF)
 endif()
 

superbuild @ 6a42e8a9

-Subproject commit 9594e969fae840725db783ca4fe5328e409be1ff
+Subproject commit 6a42e8a9f29049f704cf48fdb64a9049fbfd9ecb