…s, refactored logic to set a/b/edeck arguments to remove unnecessary class variables

… multiple calls to tc_pairs

…ctly when running once processing a directory

…d that multiple commands are generated properly

…unctions so they are in a more logical order

…ectly

…ture_1898_tc_new_options

…TCPairs wrapped config file

…les, fixed incorrect unit tests, added unit tests to ensure multiple diag_convert_map list items are formatted properly

…ack down which test fails

…t_map must be set or MET will error

…TCStat

…diag_thresh_name, and init_diag_thresh_val. Also added support for line_type, event_equal, event_equal_lead, out_init_mask, and valid_init_mask in case those are needed later. Fixed bug where variables ending with 'thresh_val' were not properly formatted without quotation marks. Added unit tests to ensure all env vars are set properly which uncovered some bugs in the logic

… set from the METplus config

…f the variables that should be checked -- fixed StatAnalysis test that was not working properly because of this

…tcenter/MET#2347

…are now set in diag_info_map.match_to_track. Added documentation for TC_PAIRS_DIAG_SOURCE<n>, TC_PAIRS_DIAG_DIR<n>, and TC_PAIRS_DIAG_TEMPLATE<n> that was missing