Added .travis.yml file for automatic commit tests.
apt-get libxerces-c-dev in  travis.yml
Added coveralls support.
Made makefiles gcov-friendly.
Propagate gcov flags into libdrampowertest.
Move coverage stats to right folder for libtest.
Added clean target for coverage test.
Remove junk files left behind by coverage test.
Test now covers clearState() function.
Test now covers a command line argument error.
Update test comment, clean gcov recursive.