try out coverity scan integration into travis CI config
next try for coverity scan setup
and another covertly scan try
trigger another travis CI build
streamline g++ 4.8 installation
next try
fix a unit test
off-load travis setup config into a separate git repo
more coverity scan tweaks
Revert "more coverity scan tweaks"

This reverts commit 6c3606162d801da8586af355882885bf1561adf4.
changes
cleanup of travis config file