clear up ambiguity in documentation
example macro upsate
Fix shortencontent to notice when it really did nothing

omits the ellipsis and the readmore link when the shorten content
algorithm did not change things.
adds means for examining SELECT query strategies

DEBUG setting to record the results of EXPLAIN SELECT for all select
queries.

This is done for MySQLi only. Anyone concerned about his performance
should be using that API set anyway.
Merge remote-tracking branch 'origin/master' into 1.4.6