(ensure_state_size, ensure_all_state_sizes, resize_all_states):

(ensure_state_size, ensure_all_state_sizes, resize_all_states):
Collapsed ensure_state_size and ensure_all_state_sizes into one
function named resize_all_states.  Allocate new vectors outside of
single threaded region.  Do only simple things inside that region.
(scm_make_fluid, scm_make_dynamic_state): Lock fluid_admin_mutex while
adding to the global lists.