Build Python with libedit

Part of gitlab-org/omnibus-gitlab#1945

config/patches/readline/readline-6.2-curses-link.patch

-link readline directly to ncurses since it needs symbols from it
-
-upstream readline does this on purpose (no direct linking), but
-it doesn't make much sense in a Linux world
-
---- a/support/shobj-conf
-+++ b/support/shobj-conf
-@@ -42,7 +42,7 @@
- SHOBJ_LIBS=
-
- SHLIB_XLDFLAGS=
--SHLIB_LIBS=
-+SHLIB_LIBS='-lncurses -ltinfo'
-
- SHLIB_DOT='.'
- SHLIB_LIBPREF='lib'