Ticket #650: configure_darwin_ldextra_like_freebsd.patch

(a) configure_orig vs. (b) configure

@@ -654 +654 @@
 _ldd=ldd
 if darwin; then
   _ldd="otool -L"
+  _ld_extra="$_ld_extra -L/usr/local/lib"
+  _inc_extra="$_inc_extra -I/usr/local/include"
 fi
 
 if aix ; then