Add new test

xt/examples-compilation.t

@@ -0,0 +1,25 @@
+use v6;
+use Test;
+use lib 'lib';
+use File::Find;
+
+# Extract examples
+chdir $?FILE.IO.dirname.IO.dirname;
+my $p1 = run 'make', 'extract-examples';
+chdir 'examples';
+
+my @files = find(dir => '.',
+                 name => /'Type'|'Language' .*? .p6$/,
+                 exclude => /'exceptions.p6'|'ArgFiles.p6'/,
+                 type => 'file');
+my $proc;
+plan +@files;
+
+for @files -> $file {
+    $proc = run 'perl6', $file, out => '/dev/null', err => '/dev/null';
+    if $proc.exitcode == 0 {
+        pass "$file is compileable";
+    } else {
+        flunk "$file examples check isn't successful";
+    }
+}