math/R-cran-gss: updated to version 2.1-9

• removed PORTREVISION due to version bump
• update website URL to align with CRAN package
• changelog:
  • R: Reworked ssllrm suite to add qd.wt.
  • man: Minor edit to reflect changes in R.
  • src: i) Changes and bug fixes in llrmnewton. ii) Minor edit in cdennewton.

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