Add JSON.pm to third_party

third_party/JSON/JSON-2.59/t/09_pc_extra_number.t

+# copied over from JSON::PC and modified to use JSON
+# copied over from JSON::XS and modified to use JSON
+
+use Test::More;
+use strict;
+BEGIN { plan tests => 6 };
+
+BEGIN { $ENV{PERL_JSON_BACKEND} = "JSON::backportPP"; }
+
+use JSON;
+
+
+#########################
+my ($js,$obj);
+my $pc = new JSON;
+
+$js  = '{"foo":0}';
+$obj = $pc->decode($js);
+is($obj->{foo}, 0, "normal 0");
+
+$js  = '{"foo":0.1}';
+$obj = $pc->decode($js);
+is($obj->{foo}, 0.1, "normal 0.1");
+
+
+$js  = '{"foo":10}';
+$obj = $pc->decode($js);
+is($obj->{foo}, 10, "normal 10");
+
+$js  = '{"foo":-10}';
+$obj = $pc->decode($js);
+is($obj->{foo}, -10, "normal -10");
+
+
+$js  = '{"foo":0, "bar":0.1}';
+$obj = $pc->decode($js);
+is($obj->{foo},0,  "normal 0");
+is($obj->{bar},0.1,"normal 0.1");
+