run: Avoid word splitting
This allows e.g.
../phoc/_build/run -C data/rootston.ini -E "_build/src/phosh -U"
to work. Otherwise '-U' would be picked up by phoc.
This allows e.g.
../phoc/_build/run -C data/rootston.ini -E "_build/src/phosh -U"
to work. Otherwise '-U' would be picked up by phoc.