rust: Update to 0.11
lua: add 'lua' attribute pointing to 'lua5'
Merge pull request #3166 from tailhook/rust0.11

rust: Update to 0.11
Added snapWebRoutes to haskellPackages.
Added snapletPostgresqlSimple to haskellPackages.
Merge remote-tracking branch 'upstream/master'
Merge pull request #3168 from fluffynukeit/add-haskell-snap-web-routes

Added snapWebRoutes to haskellPackages.
Merge pull request #3169 from fluffynukeit/add-haskell-snaplet-postgresql-simple

Added snapletPostgresqlSimple to haskellPackages.
Merge remote-tracking branch 'upstream/master'