Configure: use 5.10.0, don't require...

Configure started with 'require 5.10.0', but if executed by older perl
it failed with "might be runaway multi-line // string" instead of
naturally expected "Perl v5.10.0 required--this is only v5.x.y".

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit d83112b7fd3b0e751f8a5947e5a93db1cbbe86dc)

Configure

@@ -9,7 +9,7 @@
 
 ##  Configure -- OpenSSL source tree configuration script
 
-require 5.10.0;
+use 5.10.0;
 use strict;
 use File::Basename;
 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;