Deduplicate utils.hpp

Clean up utils/utils.hpp and math/utils.hpp but removing utils/utils.hpp
and modifying the only file that uses utils/utils.hpp ... VectorFile.cpp
Change VectorFile.cpp

Change VectorFile.cpp to reflect previous removal of utils/utils.hpp. Use
appropriate math/utils functions
Change functions to lower case

Just updating these three files to reflect new case rules being implemented
Merge pull request #71 from wilsonk/utils-cleanup

Utils.hpp cleanup