Log a bit more deprecation info

[eileenmcnaughton]

Overview

Log a bit more deprecation info

Before

People (notably @aydun) commented that they can't track down where deprecation warnings are coming from when they see them in the ConfigAndLog

After

Hopefully this will add enough more to help find them without adding too much more

Technical Details

I realise we'd probably need to do similar to deprecationWarning - but just trying to see if we can do a small improvement

Comments

[civibot]

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[totten]

So instead of showing one frame of the callstack ($dbt[1]), it shows 4 frames ($backtrace[0] to $backtrace[3])?

Sounds like a good idea.