Add 2.7.10 (fixes #380)

plugins/python-build/share/python-build/2.7.10

@@ -0,0 +1,3 @@
+#require_gcc
+install_package "readline-6.3" "http://ftpmirror.gnu.org/readline/readline-6.3.tar.gz#56ba6071b9462f980c5a72ab0023893b65ba6debb4eeb475d7a563dc65cafd43" standard --if has_broken_mac_readline
+install_package "Python-2.7.10" "https://www.python.org/ftp/python/2.7.10/Python-2.7.10.tgz#eda8ce6eec03e74991abb5384170e7c65fcd7522e409b8e83d7e6372add0f12a" ldflags_dirs standard verify_py27 ensurepip