Add new file to MANIFEST.in

Author: Matthias Koeppe

src/MANIFEST.in

@@ -2,6 +2,8 @@ global-include *.c *.cc *.cpp *.h *.hh *.hpp *.inc *.py *.pyx *.pxd *.pxi *.rst
 
 include MANIFEST.in
 
+include generate_py_source.mk
+
 graft   sage/libs/gap/test
 recursive-include sage
 recursive-exclude sage/ext/interpreters *.c *.h *.pyx *.pxd