MFH: r339285

- Fix a run-time problem with lang/ghc on FreeBSD 10.0 and later, caused by
  the iconv changes (basically GHCi was rendered unusable)
- Fix build for x11-toolkits/hs-wxc, while here
- Bump port revision for all Haskell Cabal ports as they have to be rebuilt

PR:		ports/184806
Reported by:	many
Obtained from:	FreeBSD Haskell
Approved by:	portmgr-lurkers (antoine)