preliminary location of this page is at IFCTR
interim location of this page should be at ITESRE
final location of this page should be at SAX-SDC
However in case you want to make a full reload (recompilation of all libraries and relinking of all programs) for any reasons, here are the instructions.
A full reload will take place if $XASTOP/bin and $XASTOP/lib are empty. You should also have properly configured xasbuild.