do not rely on '.' being in @inc

As of 5.25.7, Perl can be configured to not include '.' in @inc by default.
Update Makefile to use lib '.' so that it can find Module::Install on systems
that do not have it already (and use the local version in preference to
the system in versions that do).  Also rename the tests in 't/lib' and add
*just* that directory to @inc.

Author: plicease

Makefile.PL

@@ -1,6 +1,7 @@
 use strict;
 use warnings;
 
+use lib '.';
 use inc::Module::Install 1.10;
 
 all_from 'lib/PPI.pm';

t/01_compile.t

@@ -2,7 +2,8 @@
 
 # This test script only tests that the tree compiles
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 17 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 

t/03_document.t

@@ -2,7 +2,8 @@
 
 # PPI::Document tests
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 13 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use File::Spec::Functions ':ALL';

t/04_element.t

@@ -5,13 +5,14 @@
 # This does an empiric test that when we try to parse something,
 # something ( anything ) comes out the other side.
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 220 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use File::Spec::Functions ':ALL';
 use PPI;
 use Scalar::Util 'refaddr';
-use t::lib::PPI::Test 'pause';
+use PPI::Test 'pause';
 
 
 sub is_object {

t/05_lexer.t

@@ -3,14 +3,15 @@
 # Compare a large number of specific code samples (.code)
 # with the expected Lexer dumps (.dump).
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 218 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use File::Spec::Functions ':ALL';
 use PPI::Lexer;
-use t::lib::PPI::Test::Run;
+use PPI::Test::Run;
 
 #####################################################################
 # Code/Dump Testing
 
-t::lib::PPI::Test::Run->run_testdir( catdir( 't', 'data', '05_lexer' ) );
+PPI::Test::Run->run_testdir( catdir( 't', 'data', '05_lexer' ) );

t/06_round_trip.t

@@ -3,12 +3,13 @@
 # Load ALL of the PPI files, lex them in, dump them
 # out, and verify that the code goes in and out cleanly.
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More; # Plan comes later
 
 use File::Spec::Functions ':ALL';
 use PPI;
-use t::lib::PPI::Test 'find_files';
+use PPI::Test 'find_files';
 
 
 

t/07_token.t

@@ -2,12 +2,13 @@
 
 # Formal unit tests for specific PPI::Token classes
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 570 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use File::Spec::Functions ':ALL';
 use PPI;
-use t::lib::PPI::Test::Run;
+use PPI::Test::Run;
 
 
 
@@ -16,11 +17,11 @@ use t::lib::PPI::Test::Run;
 #####################################################################
 # Code/Dump Testing
 
-t::lib::PPI::Test::Run->run_testdir( catdir( 't', 'data', '07_token' ) );
+PPI::Test::Run->run_testdir( catdir( 't', 'data', '07_token' ) );
 
 {
 local $ENV{TODO} = "known bug";
-t::lib::PPI::Test::Run->run_testdir( catdir( 't', 'data', '07_token_todo' ) );
+PPI::Test::Run->run_testdir( catdir( 't', 'data', '07_token_todo' ) );
 }
 
 

t/08_regression.t

@@ -4,19 +4,20 @@
 
 # Some other regressions tests are included here for simplicity.
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 925 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use PPI;
-use t::lib::PPI::Test 'pause';
-use t::lib::PPI::Test::Run;
+use PPI::Test 'pause';
+use PPI::Test::Run;
 
 
 
 #####################################################################
 # Code/Dump Testing
 
-t::lib::PPI::Test::Run->run_testdir(qw{ t data 08_regression });
+PPI::Test::Run->run_testdir(qw{ t data 08_regression });
 
 
 

t/09_normal.t

@@ -3,7 +3,8 @@
 # Testing of the normalization functions.
 # (only very basic at this point)
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 17 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use File::Spec::Functions ':ALL';

t/10_statement.t

@@ -2,7 +2,8 @@
 
 # Test the various PPI::Statement packages
 
-use t::lib::PPI::Test::pragmas;
+use lib 't/lib';
+use PPI::Test::pragmas;
 use Test::More tests => 5 + ($ENV{AUTHOR_TESTING} ? 1 : 0);
 
 use PPI;