Separate <dist/> into <dist-app/> <dist-blitz/> <dist-tools/>

[jmoore]

As outlined in OmeroBuild there are a small number of final products (deliverables) that are produced by the build system. Each of these should govern it's own <dist/> target in some way.

[jmoore]

Most of r1531 to r1537 has been working on this and related matters. See source:branches/build_changes

The net effect is:

• much of the build.xml:<dist/> target has been separated out. More can go.
• All C++ (and similarly complicated topics) are now separated out into tools/
• The general process of things should be to create artifacts and place them under "dist"
• Tools components can come behind and overwrite existing items or just use includes/ etc.

[jmoore]

Closing. OmeroBuild and other pages need to be updated, but the process is now clear.

• All components other than tools/ produce artifacts which get copied to OMERO_HOME/dist
• Then tools/ have a chance to overwrite, insert, or update artifacts to dist.