[Halld-offline] switching to stand-alone HDDS

[Mark M. Ito]

Folks,

The change has been made. See the wiki page referenced below the next 
time you want to update your private builds.

Note that there is a small, but important change in the instructions 
since I sent them out two days ago. There is only one additional 
environment variable you need to define (not two as was stated before), 
namely HDDS_HOME.

Please let me know if you have questions or problems with the upgrade.

  -- Mark

Mark M. Ito wrote:
> Folks,
>
> I've written up a note on what this change is and how to use the new 
> stand-alone hdds scheme. Find the note at 
> http://www.jlab.org/Hall-D/software/wiki/index.php/HOWTO_use_the_stand-alone_HDDS_system 
> . There is also a text version attached.
>
> Bottom line: under the new system, you will have to checkout and build 
> hdds along with src.
>
> This change should make no difference in the execution of the code. It 
> is simply a re-arrangement of the directory structure. I have tested 
> that I get identical results on 1000 single-track events as output 
> from hdgeant using the old and new systems. I compared all fields of 
> all events in the HDDM output.
>
> The modified version of the src tree is now sitting in the branches 
> directory of the Subversion repository (branches/src-no-hdds). I plan 
> to merge the changes onto the trunk on Thursday morning. (I wanted to 
> give people a head's-up in advance of checking things in on the trunk).
>
>   -- Mark
>