Removed MAKE_CLEAN_LIB_FLAG and MAKE_LIB_FLAG as they're no longer used.
Merge pull request #47 from NASA-Tensegrity-Robotics-Toolkit/build_deprecated

Removed MAKE_CLEAN_LIB_FLAG and MAKE_LIB_FLAG as they're no longer used.
Removed sudo check and env dir chown.
Merge pull request #49 from NASA-Tensegrity-Robotics-Toolkit/remove_sudo_check

Removed sudo check and env dir chown.
Merged in master changes.