Time::HiRes: avoid importing via export_to_level

The export_to_level function forces Exporter to always load
Exporter::Heavy. This can be avoided by only using Exporter::import.

Time::HiRes's import is only trying to prevent exports of unimplemented
functions and doesn't need to make any modifications to its arguments.
This means doing a goto &Exporter::import will do everything needed.

Author: haarg

dist/Time-HiRes/HiRes.pm

@@ -74,8 +74,7 @@ sub AUTOLOAD {
 }
 
 sub import {
-    my $this = shift;
-    for my $i (@_) {
+    for my $i (@_[1 .. $#_]) {
         if (($i eq 'clock_getres'    && !&d_clock_getres)    ||
             ($i eq 'clock_gettime'   && !&d_clock_gettime)   ||
             ($i eq 'clock_nanosleep' && !&d_clock_nanosleep) ||
@@ -88,7 +87,7 @@ sub import {
             Carp::croak("Time::HiRes::$i(): unimplemented in this platform");
         }
     }
-    Time::HiRes->export_to_level(1, $this, @_);
+    goto &Exporter::import;
 }
 
 XSLoader::load( 'Time::HiRes', $XS_VERSION );