Merge fix for issue #13547.

diff --cc Makefile.pre.in
index dbf290ed736f4fd6c85fef6cdb393545f21e95d0,c49d777a7e0dd814101664a47ef21ee245d54dc9..4dcadb76afc127ec9e09cf1928c6c224007f3dc8
--- 1/Makefile.pre.in
--- 2/Makefile.pre.in
+++ b/Makefile.pre.in
@@@ -1315,6 -1252,7 +1315,8 @@@ clean: pycremova
        find build -name 'fficonfig.h' -exec rm -f {} ';' || true
        find build -name 'fficonfig.py' -exec rm -f {} ';' || true
        -rm -f Lib/lib2to3/*Grammar*.pickle
++      -rm -f Lib/_sysconfigdata.py
+       -rm -f Modules/_testembed
  
  profile-removal:
        find . -name '*.gc??' -exec rm -f {} ';'