libpcap: changed to build at cross stage if requested

network/libpcap/libpcap.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../libpcap/libpcap.desc
-[COPY] Copyright (C) 2006 - 2012 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]
@@ -32,6 +32,6 @@
 [L] OpenSource
 [S] Stable
 [V] 1.2.1
-[P] X -----5---9 117.600
+[P] X -?---5---9 117.600
 
 [D] 36054171 libpcap-1.2.1.tar.gz http://www.tcpdump.org/release/