Add CPython 3.8.7

plugins/python-build/share/python-build/3.8.7

@@ -0,0 +1,10 @@
+#require_gcc
+prefer_openssl11
+export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
+install_package "openssl-1.1.0j" "https://www.openssl.org/source/old/1.1.0/openssl-1.1.0j.tar.gz#31bec6c203ce1a8e93d5994f4ed304c63ccf07676118b6634edded12ad1b3246" mac_openssl --if has_broken_mac_openssl
+install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" mac_readline --if has_broken_mac_readline
+if has_tar_xz_support; then
+  install_package "Python-3.8.7" "https://www.python.org/ftp/python/3.8.7/Python-3.8.7.tar.xz#ddcc1df16bb5b87aa42ec5d20a5b902f2d088caa269b28e01590f97a798ec50a" ldflags_dirs standard verify_py38 copy_python_gdb ensurepip
+else
+  install_package "Python-3.8.7" "https://www.python.org/ftp/python/3.8.7/Python-3.8.7.tgz#20e5a04262f0af2eb9c19240d7ec368f385788bba2d8dfba7e74b20bab4d2bac" ldflags_dirs standard verify_py38 copy_python_gdb ensurepip
+fi