CTS-201 FIX update mesh viewer to build and run on linux

Added a lot of checking to deal with the fact that the code may encounter a
stub convexDecomposition library. Additionally updated the linux stub to fix the
automated build so our beta testers can finally have a linux build.

Unrelated fix: added upload mesh to the top level upload menu.

Code reviewed by Vir.

indra/newview/skins/default/xui/en/menu_viewer.xml

@@ -883,6 +883,18 @@
                  function="Upload.CalculateCosts"
                  parameter="Upload Animation" />
             </menu_item_call>
+            <menu_item_call
+           label="Model..."
+           layout="topleft"
+           name="Upload Model">
+            <menu_item_call.on_click
+             function="File.UploadModel"
+             parameter="" />
+            <menu_item_call.on_enable
+             function="File.EnableUploadModel" />
+            <menu_item_call.on_visible
+            function="File.MeshEnabled"/>
+            </menu_item_call>
             <menu_item_call
              label="Bulk (L$[COST] per file)..."
              layout="topleft"

install.xml

@@ -1058,9 +1058,9 @@ anguage Infrstructure (CLI) international standard</string>
           <key>linux</key>
           <map>
             <key>md5sum</key>
-            <string>33dee1d84d006a5339cf6ba4096b8bd9</string>
+            <string>54c95551cc9f792a889e2c54d3af7767</string>
             <key>url</key>
-            <uri>scp:install-packages.lindenlab.com:/local/www/install-packages/doc/llconvexdecomposition-0.1-linux-20100721.tar.bz2</uri>
+            <uri>scp:install-packages.lindenlab.com:/local/www/install-packages/doc/llconvexdecomposition-0.1-linux-20100810.tar.bz2</uri>
           </map>
           <key>darwin</key>
           <map>