libidn: changed to build at cross stage if requested

network/libidn/libidn.desc

@@ -3,7 +3,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../libidn/libidn.desc
-[COPY] Copyright (C) 2006 - 2011 The OpenSDE Project
+[COPY] Copyright (C) 2006 - 2013 The OpenSDE Project
 [COPY] Copyright (C) 2004 - 2006 The T2 SDE Project
 [COPY] Copyright (C) 1998 - 2003 Clifford Wolf
 [COPY]
@@ -31,7 +31,7 @@
 [L] LGPL
 [S] Stable
 [V] 1.22
-[P] X -----5---9 110.000
+[P] X -?---5---9 110.000
 
 [D] 483607259 libidn-1.22.tar.gz ftp://ftp.gnu.org/gnu/libidn/