vpcs 0.6 (new formula)

The VPCS can simulate up to 9 PCs. You can ping/traceroute them, or
ping/traceroute the other hosts/routers from the virtual PCs when you
study the Cisco routers in the Dynamips. VPCS is not the traditional PC,
it is just a program running on the Linux or Windows, and only few
network commands can be used in it. But VPCS can give you a big hand
when you study the Cisco devices in the Dynamips. VPCS can replace the
routers or VMware boxes which are used as PCs in the Dynamips network.

Closes Homebrew/legacy-homebrew#35311.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/vpcs.rb

@@ -0,0 +1,16 @@
+class Vpcs < Formula
+  homepage "http://vpcs.sourceforge.net/"
+  url "https://downloads.sourceforge.net/project/vpcs/0.6/vpcs-0.6-src.tbz"
+  sha1 "6ecdc42f3026286ff6decd588a08898b52ec558f"
+
+  def install
+    cd "src" do
+      system "make", "-f", "Makefile.osx"
+      bin.install "vpcs"
+    end
+  end
+
+  test do
+    system "vpcs", "--version"
+  end
+end