Patch mariadb and add missing include to avoid FTBFS with gcc 4.7

Like described here:

  - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=667198

component/mariadb/buildout.cfg

@@ -23,6 +23,13 @@ md5sum = d65f61829cfbcd5062f49db2b00bd6fe
 filename = mysql_create_system_tables__no_test.patch
 download-only = true
 
+[mariadb-handler_socket-patch]
+recipe = hexagonit.recipe.download
+url = ${:_profile_base_location_}/${:filename}
+md5sum = 8177a4588d9aea35fe97677a13cc4643
+filename = plugin_handler_socket_libhsclient_fatal.patch
+download-only = true
+
 [mariadb]
 recipe = hexagonit.recipe.cmmi
 version = 5.3.5-ga
@@ -57,6 +64,7 @@ configure-options =
 patch-options = -p0
 patches =
   ${mariadb-no_test-patch:location}/${mariadb-no_test-patch:filename}
+  ${mariadb-handler_socket-patch:location}/${mariadb-handler_socket-patch:filename}
 environment =
   CPPFLAGS=-I${ncurses:location}/include -I${readline5:location}/include
   LDFLAGS=-Wl,-rpath=${libevent:location}/lib -L${ncurses:location}/lib -Wl,-rpath=${ncurses:location}/lib -L${readline5:location}/lib -Wl,-rpath=${readline5:location}/lib -Wl,-rpath=${zlib:location}/lib

component/mariadb/plugin_handler_socket_libhsclient_fatal.patch

+# inspired by handlersocket-1.0.6-80-g88bf1e0-1.1-nmu.diff by gregoa@debian.org
+
+Description: add missing include to avoid FTBFS with gcc 4.7
+bug-debian: http://bugs.debian.org/667198
+More informations: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=667198
+Author: gregor herrmann <gregoa@debian.org>
+
+--- plugin/handler_socket/libhsclient/fatal.cpp
++++ plugin/handler_socket/libhsclient/fatal.cpp
+@@ -9,6 +9,7 @@
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <syslog.h>
++#include <unistd.h>
+
+ #include "fatal.hpp"