Improve handling of uncaught exceptions in client library

Improve handling of uncaught exceptions in client library

For easier debugging of unexpected client behaviour where an unexpected
exception is caught in try_cacth wrapper, make the following enhancements:
- Catch all SecurityManager::Exceptions instead of letting them to be
  caught by last resort "catch(...)". This will enable proper error messages.
- Print the information about unexpected exception to stderr of the caller.

Change-Id: I67edc718daa89023d5844e31f52b745257914e1f
Signed-off-by: Rafal Krypa <r.krypa@samsung.com>