Issue with gtest and GCC 4.8 - Unnecessary libraries not being linked. Resolved by introducing fake dependencies.
	modified:   CMakeLists.txt
	modified:   test/misc/calculator_test.cpp
	renamed:    tests.cpp -> test/misc/main.cpp
	modified:   test/misc/sync_test.cpp
Added comments to explain the forced dependencies.
	modified:   test/misc/calculator_test.cpp
	modified:   test/misc/main.cpp
	modified:   test/misc/sync_test.cpp
Changes for cpplint.
* Change int Travis-CI config to reflect new build style.
* Removed test executables from default build.