enable CTest in global CMakeLists.txt
add googletest binary to 'make test'
Merge pull request #141 from reneme/make_test

Enable 'make test' to run googletest binary

When running make test in the build directory it will automatically run all unit tests.
(verbose test results can be found in ${BUILD_DIR}/Testing/Temporary/LastTest.log
Merge branch 'master' into history
add option to verify a specific repository tag in cvmfs_server check