New fomrula: gsasl

The gsasl package is a superset of libgsasl. Installing it provides the
gsasl libraries, the header files, a command line tool called gsasl to
access the library from the shell and the manual.

Closes Homebrew/homebrew#16428.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/gsasl.rb

@@ -0,0 +1,15 @@
+require 'formula'
+
+class Gsasl < Formula
+  homepage 'http://www.gnu.org/software/gsasl/'
+  url 'http://ftpmirror.gnu.org/gsasl/gsasl-1.8.0.tar.gz'
+  mirror 'http://ftp.gnu.org/gsasl/gsasl-1.8.0.tar.gz'
+  sha1 '343fd97ae924dc406986c02fb9b889f4114239ae'
+
+  def install
+    system "./configure", "--disable-dependency-tracking",
+                          "--with-gssapi-impl=mit",
+                          "--prefix=#{prefix}"
+    system "make install"
+  end
+end