Import `yes.pl` from https://github.com/mubaris/yes

Change-Id: I0367a8357916b73f5260c72ecefa0ffb738eda94
diff --git a/darwin-x86/bin/yes b/darwin-x86/bin/yes
new file mode 100755
index 0000000..573e825
--- /dev/null
+++ b/darwin-x86/bin/yes
@@ -0,0 +1,8 @@
+#!/usr/bin/env perl
+
+my $msg =
+    @ARGV
+    ? (join " ", splice @ARGV) . "\n"
+    : "y\n";
+
+print $msg while 1;
diff --git a/linux-x86/bin/yes b/linux-x86/bin/yes
new file mode 100755
index 0000000..573e825
--- /dev/null
+++ b/linux-x86/bin/yes
@@ -0,0 +1,8 @@
+#!/usr/bin/env perl
+
+my $msg =
+    @ARGV
+    ? (join " ", splice @ARGV) . "\n"
+    : "y\n";
+
+print $msg while 1;