import utils.h and mv SusyTest0/utils.h -> SusyntHlfv/utils.h

Import utils.[h,cxx] from SusyTest0 with history.
Following the instructions at
http://blog.neutrino.es/2012/git-copy-a-file-or-directory-from-another-repository-preserving-history/

git clone git@github.com:gerbaudo/SusyntHlfv.git
git clone git@github.com:gerbaudo/SusyTest0.git
mkdir /tmp/mergepatchs
cd SusyTest0/
export reposrc="SusyTest0/utils.h Root/utils.cxx"
git format-patch -o /tmp/mergepatchs $(git log $reposrc|grep ^commit|tail -1|awk '{print $2}')^..HEAD $reposrc
cd ../SusyntHlfv/
git am /tmp/mergepatchs/*.patch