Update make_xios.sh

Need to implement a more general way to access the ARCH files such they are called as part of the git clone.

SCRIPTS/make_xios.sh

@@ -3,7 +3,7 @@ cd $WORK
 svn co -r1242 http://forge.ipsl.jussieu.fr/ioserver/svn/XIOS/trunk $XIOS_DIR
 cd $XIOS_DIR
 
-cp $ARCH/arch-XC30_ARCHER* arch/.
+cp $ARCH1/arch-XC30_ARCHER* arch/.
 
 ./make_xios --full --prod --arch XC30_ARCHER --netcdf_lib netcdf4_par