Building for more than one host architecture

[jba@aps.anl.gov (Janet B. Anderson)]

In answer to the following comment

>   With the current set up, to be able to build epics system
> for a target, we have to successfully build the system for
> a host first.
> 
>   With Janet's proposal, I hope, the above probelm can be 
> resolved easily.

Building for the host first won't change with what I have proposed 
because the tools antelope, e_flex, and the proposed installEpics
have to be built for the host before they can be used in building
the target archs.

Janet