LUCIDDB:  a few more arch doc updates
LUCIDDB:  a few more arch doc updates

[git-p4: depot-paths = "//open/lu/dev/": change = 9631]

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