boblightd: add patch to build with gcc-4.7

this fixes the following build error:
  clients/flagmanager.cpp:88:3: error: 'opterr' was not declared in this scope
  clients/flagmanager.cpp:90:49: error: 'getopt' was not declared in this scope
  ..

packages/addons/service/multimedia/boblightd/patches/boblightd-2.0.5-getopt-includes.patch

@@ -0,0 +1,13 @@
+diff --git a/src/clients/flagmanager.cpp b/src/clients/flagmanager.cpp
+index d9f3cbf..82eb978 100644
+--- a/src/clients/flagmanager.cpp
++++ b/src/clients/flagmanager.cpp
+@@ -25,6 +25,8 @@
+ #define BOBLIGHT_DLOPEN_EXTERN
+ #include "../lib/boblight.h"
+ 
++#include <unistd.h>
++
+ using namespace std;
+ 
+ //very simple, store a copy of argc and argv