Hack to disable shared library detection, so configure won't try
to link with "/usr/local/lib/libiconv.so -static".

--- configure.orig	2013-10-05 21:52:03.000000000 +0200
+++ configure	2013-11-18 17:33:05.000000000 +0100
@@ -34123,7 +34123,7 @@ fi
 $as_echo "$acl_cv_rpath" >&6; }
   wl="$acl_cv_wl"
   acl_libext="$acl_cv_libext"
-  acl_shlibext="$acl_cv_shlibext"
+  acl_shlibext="${SHLIBEXT-$acl_cv_shlibext}"
   acl_libname_spec="$acl_cv_libname_spec"
   acl_library_names_spec="$acl_cv_library_names_spec"
   acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"