configury: don't nuke the lib subdirectory.
configury: don't nuke the lib subdirectory.

Now that we've made use of lib for Lua library files, make sure
not to let gnulib-tool scribble in it.
* bootstrap.conf (source_base): Tell gnulib-tool to put its empty
library directory somewhere harmless.
(luaposix_remove_empty_lib): And then remove that.

Signed-off-by: Gary V. Vaughan <f9023000f29773649f3850298becb9544b5fd6a9@gnu.org>

jimmyharris/luaposix,snegovick/luaposix,snegovick/luaposix,rrthomas/luaposix,jimmyharris/luaposix,ardje/luaposix,luaposix/luaposix,ardje/luaposix,rrthomas/luaposix,zevv/luaposix,zevv/luaposix