build-python: Install the license files for libffi and python

build-python.sh

@@ -134,6 +134,8 @@ cd $BUILDDIR
 ../configure --prefix="$PREFIX" --host=$HOST --disable-symvers --disable-docs
 $MAKE -j$CORES
 $MAKE install
+mkdir -p "$PREFIX/share/libffi"
+install -m644 ../LICENSE "$PREFIX/share/libffi/LICENSE.txt"
 cd ../..
 
 cd cpython-mingw
@@ -166,4 +168,6 @@ find $PREFIX/lib/python* -name __pycache__ | xargs rm -rf
 # a Python version that is supposed to be the primary Python.
 cp -a $PREFIX/bin/python3.exe $PREFIX/bin/python.exe
 
+install -m644 ../LICENSE "$PREFIX/LICENSE.txt"
+
 cd ../..