ORCA: fix for TD calc if symmetry isn't specified
ORCA: fix for TD calc if symmetry isn't specified

* Create etsecs, etenergies, and etsyms if etenergies doesn't exist.
  Previously, these were only created if SINGLETS was in the TD-DFT/TDA
  EXCITED header.

* Be more explicit about etsyms: Singlet, Triplet, or Not specified

ben-albrecht/cclib,Clyde-fare/cclib,langner/cclib,berquist/cclib,langner/cclib,cclib/cclib,langner/cclib,ghutchis/cclib,berquist/cclib,Clyde-fare/cclib,jchodera/cclib,ghutchis/cclib,ATenderholt/cclib,ATenderholt/cclib,cclib/cclib,berquist/cclib,ben-albrecht/cclib,jchodera/cclib,Schamnad/cclib,andersx/cclib,cclib/cclib,andersx/cclib,gaursagar/cclib,Schamnad/cclib,gaursagar/cclib