Modernize exports and inheritance

Declare parent classes with use parent, now that we can require
Perl 5.12 or later. Do not inherit from Exporter; instead, just
import the import function from the Exporter class.

lib/Pod/Man.pm

@@ -15,10 +15,10 @@
 package Pod::Man v6.0.0;
 
 use 5.012;
+use parent qw(Pod::Simple);
 use warnings;
 
 use Carp qw(carp croak);
-use Pod::Simple ();
 
 # Conditionally import Encode and set $HAS_ENCODE if it is available.  This is
 # required to support building as part of Perl core, since podlators is built
@@ -29,8 +29,6 @@ BEGIN {
     $HAS_ENCODE = eval { require Encode };
 }
 
-our @ISA = qw(Pod::Simple);
-
 # Ensure that $Pod::Simple::nbsp and $Pod::Simple::shy are available.  Code
 # taken from Pod::Simple 3.32, but was only added in 3.30.
 my ($NBSP, $SHY);

lib/Pod/ParseLink.pm

@@ -16,9 +16,8 @@ package Pod::ParseLink v6.0.0;
 use 5.012;
 use warnings;
 
-use Exporter;
+use Exporter qw(import);
 
-our @ISA = qw(Exporter);
 our @EXPORT = qw(parselink);
 
 ##############################################################################

lib/Pod/Text.pm

@@ -15,14 +15,12 @@
 package Pod::Text v6.0.0;
 
 use 5.012;
+use parent qw(Pod::Simple);
 use warnings;
 
 use Carp qw(carp croak);
 use Encode qw(encode);
-use Exporter ();
-use Pod::Simple ();
-
-our @ISA = qw(Pod::Simple Exporter);
+use Exporter qw(import);
 
 # We have to export pod2text for backward compatibility.
 our @EXPORT = qw(pod2text);

lib/Pod/Text/Color.pm

@@ -13,13 +13,11 @@
 package Pod::Text::Color v6.0.0;
 
 use 5.012;
+use parent qw(Pod::Text);
 use warnings;
 
-use Pod::Text ();
 use Term::ANSIColor qw(color colored);
 
-our @ISA = qw(Pod::Text);
-
 ##############################################################################
 # Overrides
 ##############################################################################

lib/Pod/Text/Overstrike.pm

@@ -20,12 +20,9 @@
 package Pod::Text::Overstrike v6.0.0;
 
 use 5.012;
+use parent qw(Pod::Text);
 use warnings;
 
-use Pod::Text ();
-
-our @ISA = qw(Pod::Text);
-
 ##############################################################################
 # Overrides
 ##############################################################################

lib/Pod/Text/Termcap.pm

@@ -13,14 +13,12 @@
 package Pod::Text::Termcap v6.0.0;
 
 use 5.012;
+use parent qw(Pod::Text);
 use warnings;
 
-use Pod::Text ();
 use POSIX ();
 use Term::Cap;
 
-our @ISA = qw(Pod::Text);
-
 ##############################################################################
 # Overrides
 ##############################################################################

t/lib/Test/Podlators.pm

@@ -9,11 +9,10 @@
 package Test::Podlators v6.0.0;
 
 use 5.012;
-use base qw(Exporter);
 use warnings;
 
 use Encode qw(decode encode);
-use Exporter;
+use Exporter qw(import);
 use File::Spec;
 use Test::More;
 

t/lib/Test/RRA.pm

@@ -12,10 +12,10 @@ package Test::RRA v11.0.0;
 
 use 5.012;
 use autodie;
-use base qw(Exporter);
 use warnings;
 
 use Carp qw(croak);
+use Exporter qw(import);
 use File::Temp;
 
 # Abort if Test::More was loaded before Test::RRA to be sure that we get the

t/lib/Test/RRA/Config.pm

@@ -10,9 +10,9 @@
 package Test::RRA::Config v11.0.0;
 
 use 5.012;
-use base qw(Exporter);
 use warnings;
 
+use Exporter qw(import);
 use Test::More;
 
 # Exports.

t/lib/Test/RRA/ModuleVersion.pm

@@ -10,9 +10,9 @@ package Test::RRA::ModuleVersion v11.0.0;
 
 use 5.012;
 use autodie;
-use base qw(Exporter);
 use warnings;
 
+use Exporter qw(import);
 use File::Find qw(find);
 use Test::More;
 use Test::RRA::Config qw(@MODULE_VERSION_IGNORE);