configury: don't use unicode characters in shell comments.
configury: don't use unicode characters in shell comments.

* configure.ac: Replace unicode apostrophes with ASCII equivalents.

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

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