Revert "Trying a new setup of travis, clang 3.5 & gcc 4.9 specificly"
Revert "Trying a new setup of travis, clang 3.5 & gcc 4.9 specificly"

This reverts commit 758ecd1acc19b5a21e038b53eb5830d25b8a4cff.

helmesjo/hello-ci,helmesjo/hello-cd,helmesjo/hello-ci,helmesjo/hello-cd