Fix bootstap build on 32-bit systems

Problem found and reported by Nicolas Lécureuil from Mageia

tycho-bootstrap.sh

@@ -1,5 +1,4 @@
-#! /bin/bash
-set -e -x
+#! /bin/bash -e
 
 . $(pwd)/tycho-scripts.sh
 

tycho-debundle.sh

@@ -1,5 +1,4 @@
 #! /bin/bash
-set -x
 
 . $(pwd)/tycho-scripts.sh
 

tycho.spec

@@ -221,6 +221,7 @@ sed -i -e 's/org\.mockito/org.mockito.mockito-core/' tycho-bundles/org.eclipse.t
 # Bootstrap Build
 %if %{eclipse_bootstrap}
 tar -xf %{SOURCE5}
+ln -s lib64 bootstrap/usr/lib
 %endif
 
 %if %{tycho_bootstrap}