gstreamer: changed build priority (161.400 -> 155.400)

Note:

Build before evolution because the optional "audio-inline" plugin
can be build.

multimedia/gstreamer/gstreamer.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../gstreamer/gstreamer.desc
-[COPY] Copyright (C) 2006 - 2010 The OpenSDE Project
+[COPY] Copyright (C) 2006 - 2011 The OpenSDE Project
 [COPY] Copyright (C) 2004 - 2006 The T2 SDE Project
 [COPY] Copyright (C) 1998 - 2004 Clifford Wolf
 [COPY]
@@ -35,7 +35,7 @@
 [L] LGPL
 [S] Stable
 [V] 0.10.31
-[P] X -----5---9 161.400
+[P] X -----5---9 155.400
 
 [O] . $base/package/*/*/gtk+-conf.in