SqlBagOStuff: document public method deleteAll()

Change-Id: I23700714453b6243e564642f2bad4a2d1c2469c6
DatabaseBase::tableName() fix limit while invoking explode()

Limit for explode() needs to be set to 3 to allow entering
branch at line 2350.

Change-Id: Idc2ba81a4bafa3e5511982db73a5c1549f1f9ef0
Merge "SqlBagOStuff: document public method deleteAll()"
Merge "DatabaseBase::tableName() fix limit while invoking explode()"