FARRAGO: During some distBuild.sh calls dist dir is deleted inadvertently.  Finer grain clean targets.
FARRAGO: During some distBuild.sh calls dist dir is deleted
inadvertently.  Finer grain clean targets.

[git-p4: depot-paths = "//open/dy/dev/": change = 13636]

LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb