Don't implement LD_LIBRARY_PATH hack on OSX (doesn't need it)

gitlab/build.sh

@@ -6,7 +6,9 @@ source $(dirname ${0})/functions.sh
 run_cmd_ld ./bin/buildout
 
 # Corrects the virtualenv to take LD_LIBRARY_PATH into account
-fix_venv
+if [ ${ARCH} == "linux" ]; then
+  fix_venv
+fi
 
 if [ -x ./bin/bob_dbmanage.py ]; then
   run_cmd ./bin/bob_dbmanage.py all download --force;