Add Libtap as a bundled library (does not change any behaviour without --enable-libtap)

Detects system library as pre-1.4.13 and does not install the built-in library anymore

Tested on:
  - Linux x86_64, with and without local libtap (System libtap installed)
	- Linux x86, with and without local libtap (System libtap NOT installed)
  - Solaris SPARC, with and without local libtap, with and without system libtap installed

1 files changed, 16 insertions, 0 deletions

diff --git a/tap/tests/diag/test.pl b/tap/tests/diag/test.pl
new file mode 100644
index 00000000..621dc27d
--- /dev/null
+++ b/tap/tests/diag/test.pl
@@ -0,0 +1,16 @@
+#!/usr/bin/perl
+
+use warnings;
+use strict;
+
+use Test::More;
+
+my $rc = 0;
+
+plan tests => 2;
+
+$rc = diag("A diagnostic message");
+diag("Returned: $rc");
+
+ok(1, 'test 1') or diag "ok() failed, and shouldn't";
+ok(0, 'test 2') or diag "ok() passed, and shouldn't";