/usr/local/lib and /usr/local/include as EXTRA_*PATH

dtool/Config.FreeBSD.pp

@@ -302,3 +302,6 @@
   #define EXTRA_IPATH /usr/PCBSD/local/include/
   #define EXTRA_LPATH /usr/PCBSD/local/lib/
 #endif
+
+#define EXTRA_IPATH /usr/local/include/
+#define EXTRA_LPATH /usr/local/lib/