RT #132935: correctly check VERSIONs in ExtUtils::ParseXS

The following version check does not work correctly:

BEGIN { $VERSION = '3.38' }
use ExtUtils::ParseXS::Constants $VERSION;

The reason is that we must use version "literals",
not "variables" in `use Module VERSION`.
For the sake of ease of maintenance,
we use "require" and "->VERSION", instead of "use" here.

dist/ExtUtils-ParseXS/lib/ExtUtils/ParseXS.pm

@@ -12,11 +12,11 @@ use Symbol;
 our $VERSION;
 BEGIN {
   $VERSION = '3.38';
+  require ExtUtils::ParseXS::Constants; ExtUtils::ParseXS::Constants->VERSION($VERSION);
+  require ExtUtils::ParseXS::CountLines; ExtUtils::ParseXS::CountLines->VERSION($VERSION);
+  require ExtUtils::ParseXS::Utilities; ExtUtils::ParseXS::Utilities->VERSION($VERSION);
+  require ExtUtils::ParseXS::Eval; ExtUtils::ParseXS::Eval->VERSION($VERSION);
 }
-use ExtUtils::ParseXS::Constants $VERSION;
-use ExtUtils::ParseXS::CountLines $VERSION;
-use ExtUtils::ParseXS::Utilities $VERSION;
-use ExtUtils::ParseXS::Eval $VERSION;
 $VERSION = eval $VERSION if $VERSION =~ /_/;
 
 use ExtUtils::ParseXS::Utilities qw(