Add CPython 2.7.16 (#1296)

plugins/python-build/share/python-build/2.7.16

@@ -0,0 +1,8 @@
+#require_gcc
+install_package "openssl-1.0.2q" "https://www.openssl.org/source/openssl-1.0.2q.tar.gz#5744cfcbcec2b1b48629f7354203bc1e5e9b5466998bbccc5b5fcde3b18eb684" mac_openssl --if has_broken_mac_openssl
+install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" standard --if has_broken_mac_readline
+if has_tar_xz_support; then
+  install_package "Python-2.7.16" "https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tar.xz#f222ef602647eecb6853681156d32de4450a2c39f4de93bd5b20235f2e660ed7" ldflags_dirs standard verify_py27 copy_python_gdb ensurepip
+else
+  install_package "Python-2.7.16" "https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz#01da813a3600876f03f46db11cc5c408175e99f03af2ba942ef324389a83bad5" ldflags_dirs standard verify_py27 copy_python_gdb ensurepip
+fi