libwnck: add it from gnome repo.

libwnck/BUILD

@@ -0,0 +1,12 @@
+(
+
+   ./configure  --prefix=${GNOME210_PREFIX:-/usr}  \
+                --build=$BUILD        \
+                --sysconfdir=/etc     \
+                --localstatedir=/var  \
+                --infodir=${GNOME210_PREFIX:-/usr}/share/info  \
+                --mandir=${GNOME210_PREFIX:-/usr}/share/man    \
+                $OPTS                                         &&
+    default_make
+
+) > $C_FIFO 2>&1

libwnck/DEPENDS

@@ -0,0 +1,2 @@
+depends  gtk+-2
+depends  startup-notification

libwnck/DETAILS

@@ -0,0 +1,15 @@
+          MODULE=libwnck
+           MAJOR=2.30
+         VERSION=$MAJOR.7
+          SOURCE=$MODULE-$VERSION.tar.bz2
+      SOURCE_URL=$GNOME_URL/sources/$MODULE/$MAJOR
+      SOURCE_VFY=sha1:b5764fff5f5445405d93519cf1b449965a52083c
+        WEB_SITE=http://www.gnome.org
+         ENTERED=20020714
+         UPDATED=20111118
+           SHORT="A window navigator construction kit"
+
+cat << EOF
+libwnck is Window Navigator Construction Kit, i.e. a library to use
+for writing pagers and taskslists and stuff.
+EOF