mysql++: use mysql instead of connector.

Closes #6895.

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

Formula/mysql++.rb

@@ -13,15 +13,31 @@ class Mysqlxx < Formula
     sha256 "154e219e9cac151437d47b281ca35aa35eaf3d510b04f5e9886a0257a983a760" => :mountain_lion
   end
 
-  depends_on "mysql-connector-c"
+  depends_on :mysql
 
   def install
+    mysql_include_dir = `mysql_config --variable=pkgincludedir`
     system "./configure", "--disable-debug",
                           "--disable-dependency-tracking",
                           "--prefix=#{prefix}",
                           "--with-field-limit=40",
                           "--with-mysql-lib=#{HOMEBREW_PREFIX}/lib",
-                          "--with-mysql-include=#{HOMEBREW_PREFIX}/include"
+                          "--with-mysql-include=#{mysql_include_dir}"
     system "make", "install"
   end
+
+  test do
+    (testpath/"test.cpp").write <<-EOS.undent
+      #include <mysql++/cmdline.h>
+      int main(int argc, char *argv[]) {
+        mysqlpp::examples::CommandLine cmdline(argc, argv);
+        if (!cmdline) {
+          return 1;
+        }
+        return 0;
+      }
+    EOS
+    system ENV.cxx, "test.cpp", `mysql_config --include`.chomp, "-L#{lib}", "-lmysqlpp", "-o", "test"
+    system "./test", "-u", "foo", "-p", "bar"
+  end
 end