Add CPython 3.10a6

plugins/python-build/share/python-build/3.10.0a6

@@ -0,0 +1,10 @@
+#require_gcc
+prefer_openssl11
+export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
+install_package "openssl-1.1.1h" "https://www.openssl.org/source/old/1.1.1/openssl-1.1.1h.tar.gz#5c9ca8774bd7b03e5784f26ae9e9e6d749c9da2438545077e6b3d755a06595d9" 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-3.10.0a6" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a6.tar.xz#70ddd5898b996394103d114185429212dadeaf60fa260054712731bc126dca5c" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
+else
+    install_package "Python-3.10.0a6" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a6.tgz#81ba70f5ab95358f20886da85288af4117b45eadbe62590ce9a5bbb015f0faf1" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
+fi