Making travis happy again

[BurningEnlightenment]

DO NOT MERGE YET

So as implied by the headline, I'm currently working toward a green "build|passed" travis sticker.

I updated the travis configuration file, so that Ubuntu 14.04 LTS and GCC 4.8 will be used which in turn means that the C++0x (or better C++11) build no longer fails because of Boost.Thread.
Furthermore I fixed the selfpipe example (#52) and the fourth tutorial (#53).

Unfortunately the Travis GCC 4.8 C++11 build of the latter fails (see the build log). I located the problem in application/auto_handler.hpp where the base_selector of the auto_handler class seems to incorrectly pick handler_auto_set_u instead of handler_auto_set_c. Which of course can't find a standard constructor for myapp. Please note that MSVC 19 and GCC 4.8 with -std=c++03 didn't reproduce the misbehaviour... Any thoughts?

[pmcenery]

Unfortunately the Travis GCC 4.8 C++11 build of the latter fails (see the build log). I located the problem in application/auto_handler.hpp where the base_selector of the auto_handler class seems to incorrectly pick handler_auto_set_u instead of handler_auto_set_c. Which of course can't find a standard constructor for myapp. Please note that MSVC 19 and GCC 4.8 with -std=c++03 didn't reproduce the misbehaviour... Any thoughts?

Is there any fix available that will allow auto_handler to work with GCC >= 5 with -std=c++11?

Many thanks,
Paul.

[BurningEnlightenment]

@pmcenery sadly I didn't continue the investigation back than and therefore I have no fix available. However, you could try replacing boost::conditional and boost::is_convertible with their respective standard library counterparts and see if that works.