Variables being used before being set #4638

Using #4617 it is now possible to track when a variable on the data structure is used or edited. This means that-with minimal codes edits-one can flag when a variable is edited for the first time after it has already been used. In future we can also do more complex checks such as verifying variables are not edited, used, and then edited again (in general, I cannot imagine a valid use for a variable taking multiple values through the course of a single model evaluation).

This issue will track the current issues flagged from the large tokamak and ST eval files. These variables are edited once they have already been used at least once.

• dz_fw_plasma_gap
• dz_xpoint_divertor
• b_plasma_inboard_toroidal (b_plasma_inboard/outboard_toroidal used before being calculated #4623)
• b_plasma_outboard_toroidal (b_plasma_inboard/outboard_toroidal used before being calculated #4623)
• f_c_plasma_bootstrap
• fusden_alpha_total
• p_fusion_total_mw
• beta_fast_alpha
• p_plasma_ohmic_mw (p_plasma_ohmic_mw used in current_drive before it is calculated #4624)
• nd_plasma_electron_max_array
• dx_tf_inboard_out_toroidal
• dr_tf_plasma_case
• dx_tf_side_case_min
• dx_tf_wp_primary_toroidal
• f_vforce_inboard
• c_tf_turn
• j_cs_pulse_start
• a_cs_poloidal (Calculate CS area variables before they are used #4652)
• t_plant_pulse_burn
• dr_fw_inboard
• dr_fw_outboard
• deg_blkt_inboard_poloidal_plasma
• a_div_surface_total
• breeder_f
• f_a_fw_coolant_inboard
• f_a_fw_coolant_outboard
• vpfskv
• eta_turbine
• p_plant_electric_base_total_mw
• rref
• alphaj
• ind_plasma_internal_norm
• beta_norm_max
• a_tf_turn_cable_space_no_void
• a_tf_turn
• str_wp