ngen centric BMI functions needed

[hellkite500]

Core Model Functions

• initialize
• finalize

Model interactions

• update
• update_until
• set_value
• get_value_ptr
• get_value_at_indicies

Fundamental variable info

• get_input_item_count
• get_input_var_names
• get_output_item_count
• get_out_var_names
• get_var_type
• get_var_itemsize
• get_var_nbytes
• get_var_units
• get_var_grid

Time controls

• get_time_units
• get_current_time
• get_end_time
• get_time_step

Not required, but simple, useful BMI function

• get_component_name