Provide friendly text at end of Message Log after building

[anonymous]

The end of the Message Log after a successful build is very unfriendly:

buildcol.pl> *** outputting information for classifier: CL1
buildcol.pl> *** outputting information for classifier: CL2
buildcol.pl> *** outputting information for classifier: CL3
buildcol.pl> *** outputting information for classifier: oai
buildcol.pl> *** creating auxiliary files 
buildcol.pl> Command complete.

The end of the Import phase is nicer:

import.pl> *********************************************
import.pl> Import complete
import.pl> *********************************************
import.pl> * 500 documents were considered for processing
import.pl> * 500 were processed and included in the collection
import.pl> Command complete.
import.pl> Extracting new metadata from archive files.
import.pl> Archived metadata extraction complete.

but still unpleasant. It would give users more confidence if we said 
something like this at the end of the Message Log:

Build successful.
500 documents were considered for processing and all were included.

2 search indexes were constructed using the Lucene indexer:
     text:      5000 words, 23K 
     ex.Title:  300 words, 2K

4 browse classifiers were constructed:
     CL1: dc.Title using an AZList
     CL2: dc.Subject using an AZCompactList
     CL3: dc.Creator using an AZList
     CL4: dc.Source using an AZCompactList

5 plugins were used:
     GAPlug, ArcPlug, RecPlug, OAIPlug, XMLPlug

2 plugins were not used:
     TextPlug, PDFPlug