ghc-options (and maybe other things) passed in the wrong order in a program-options section

[jberryman]

related to #8900

I noticed this with the following on 9.6.3 and cabal 3.10.1.0, but same behavior with ghc-8.10.7 and cabal-3.6.2.0 (at least it isn't new I guess):

program-options
  ghc-options: -Wall
  ghc-options: -Werror 
  -- we'd expect this to override above. It does not; we need to swap the lines:
  ghc-options: -Wwarn 

The actual context was attempting to use -fno-info-table-map-with-fallback + -fno-info-table-map-with-stack

I was curious if cpp-options were similarly passed out of order, but that's not a supported field. Actually I guess this whole section is basically undocumented still…