General:
--every instance of normalization should use sdss_normspec, which might need to 
   become a function

;; sdss_chkciv.pro
--Add in wavelength bound modification functionality of sdss_fixciv.
--Have it use the strct.wrest[0] to set the doublet for the structure
   and remove dblt_name= option?

;; sdss_civsearch.pro
--have it sort input list and structure to remove requirement that
they already be in same order.

;; sdss_ewciv.pro
--improve AODM, basically must figure out SDSS saturation

;; sdss_fixciv.pro
--may become obsolete with upgraded sdss_chkciv
--fix to work with new codes
--check works with other doublets

;; sdss_fndciv.pro

;; sdss_fndlin.pro
--have it search both normalized continua and save both centroid lists
in the sdsscontistrct.
--have it sort input list and structure to remove requirement that
they already be in same order.

;; sdss_functions.pro

;; sdss_runpipeline.pro

;; sdsscivstrct__define.pro

;; sdsscontistrct__define.pro
--Have it save the centroids found with the other continuum for 
 easy swapping.