refresh values of “Portability” field

‘Text.Megaparsec.Prim’ cannot be considered portable since it uses
multi-parameter type classes and functional dependencies.

Other modules that depend on these non-portable features from
‘Text.Megaparsec.Prim’ should be considered non-portable too.

Text/Megaparsec/Char.hs

@@ -7,7 +7,7 @@
 --
 -- Maintainer  :  Mark Karpov <markkarpov@opmbx.org>
 -- Stability   :  experimental
--- Portability :  portable
+-- Portability :  non-portable
 --
 -- Commonly used character parsers.
 

Text/Megaparsec/Lexer.hs

@@ -7,7 +7,7 @@
 --
 -- Maintainer  :  Mark Karpov <markkarpov@opmbx.org>
 -- Stability   :  experimental
--- Portability :  non-portable (uses local universal quantification: PolymorphicComponents)
+-- Portability :  non-portable
 --
 -- High-level parsers to help you write your lexer. The module doesn't
 -- impose how you should write your parser, but certain approaches may be

Text/Megaparsec/Perm.hs

@@ -7,7 +7,7 @@
 --
 -- Maintainer  :  Mark Karpov <markkarpov@opmbx.org>
 -- Stability   :  experimental
--- Portability :  non-portable (uses existentially quantified data constructors)
+-- Portability :  non-portable
 --
 -- This module implements permutation parsers. The algorithm is described
 -- in: /Parsing Permutation Phrases/, by Arthur Baars, Andres Loh and

Text/Megaparsec/Prim.hs

@@ -7,7 +7,7 @@
 --
 -- Maintainer  :  Mark Karpov <markkarpov@opmbx.org>
 -- Stability   :  experimental
--- Portability :  portable
+-- Portability :  non-portable (MPTC with FD)
 --
 -- The primitive parser combinators.