[gcompris] minor fix to keep text layout in translation

[Bruno Coudoin <bcoudoin src gnome org>]

commit 470c7471b4603a5f2b638e38f63542414426be68
Author: Peter Albrecht <pa-dev gmx de>
Date:   Thu Sep 13 21:46:35 2012 +0200

    minor fix to keep text layout in translation
    
    Adding 'xml:space="preserve"' makes intltool-update respect
    newline-characters. So we can keep the layout of the texts also in
    translations. Otherwise all newline-characters would be removed.
    (Copied form "boards/menu.xml.in")
    
    But this means to use newlines realy only, where new lines should begin.

 src/mining-activity/mining.xml.in |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/src/mining-activity/mining.xml.in b/src/mining-activity/mining.xml.in
index 2f955d6..933a457 100644
--- a/src/mining-activity/mining.xml.in
+++ b/src/mining-activity/mining.xml.in
@@ -13,17 +13,14 @@
         <_description>Use the mousewheel to approach the rockwall an look for gold nuggets.</_description>
         <_prerequisite>You should be familiar with moving the mouse and clicking.</_prerequisite>
         <_goal>Lern to use the mousewheel to zoom in and out.</_goal>
-        <_manual>Looking at the rockwall, you can see a sparkle somewhere. Move the mouse cursor next to this sparkle and use the mousewheel to zoom in.
-If you zoomed in at maximum, a gold nugget will appear at the position of the sparkle. Click on the gold nugget to collect it.
+        <_manual xml:space="preserve">Looking at the rockwall, you can see a sparkle somewhere. Move the mouse cursor next to this sparkle and use the mousewheel to zoom in. If you zoomed in at maximum, a gold nugget will appear at the position of the sparkle. Click on the gold nugget to collect it.
 
-Having collected the nugget, use the mousewheel to zoom out again. If you zoomed out at maximum, another sparkle will appear, showing the next gold
-nugget to collect. Collect enough nuggets to complete the level.
+Having collected the nugget, use the mousewheel to zoom out again. If you zoomed out at maximum, another sparkle will appear, showing the next gold nugget to collect. Collect enough nuggets to complete the level.
 
-The lorry in the lower, right corner of the screen will tell you the number of already collected nuggets and the total number of nuggets to collect
-in this level.
+The lorry in the lower, right corner of the screen will tell you the number of already collected nuggets and the total number of nuggets to collect in this level.
 
 Have fun! :)</_manual>
-        <_credit>Thanks to the Tuxpaint team for providing the following sounds under GPL:
+        <_credit xml:space="preserve">Thanks to the Tuxpaint team for providing the following sounds under GPL:
 - realrainbow.ogg - used when a new gold nugget appears
 - metalpaint.wav - remixed and used when a gold nugget is collected</_credit>
   </Board>