Replace long with double in timevaldiff. The cpplint runtime/int hates bare 'long', and the using-code was publishing it as a double anyway.
Replace long with double in timevaldiff.
The cpplint runtime/int hates bare 'long', and the
using-code was publishing it as a double anyway.

sheim/drake,billhoffman/drake,billhoffman/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,billhoffman/drake,sheim/drake