Add tdb formula

This is a dependency of Rhythmbox and is still waiting on upstream
packaging due to a missing test.

See Homebrew/homebrew-core#45054

Author: fwcd

Formula/tdb.rb

@@ -0,0 +1,20 @@
+# Based on https://github.com/Homebrew/homebrew-core/pull/45054 by @minusf
+
+class Tdb < Formula
+  desc "Trivial database library"
+  homepage "https://tdb.samba.org"
+  url "https://www.samba.org/ftp/tdb/tdb-1.4.9.tar.gz"
+  sha256 "0ac226073e3a2db8648da7af744cb95f50766a52feeb001d558b2b321b74a765"
+
+  depends_on "docbook" => :build
+  depends_on "docbook-xsl" => :build
+  depends_on "python" => :build
+
+  def install
+    ENV["XML_CATALOG_FILES"] = "#{etc}/xml/catalog"
+
+    system "./configure", "--prefix=#{prefix}", "--disable-rpath"
+    system "make", "test"
+    system "make", "install"
+  end
+end