Fix various typos

Thanks to @fluesvamp for bringing these to my attention.

Author: bgamari

Changelog

@@ -89,7 +89,7 @@ Changed in version 0.7.2.1:
    * Fix build on Windows.
 
 Changed in version 0.7.2.0:
-   * Bump upper-bound on base and filepath libraries to accomodate GHC HEAD (7.10)
+   * Bump upper-bound on base and filepath libraries to accommodate GHC HEAD (7.10)
    * Drop Cabal dependency to 1.10
    * Use explicit forall syntax to avoid warning
    * Support Applicative/Monad proposal in Win32/Draw backend

System/Console/Haskeline/Backend/Posix.hsc

@@ -141,7 +141,7 @@ ansiKeys = [("\ESC[D",  simpleKey LeftKey)
             -- Terminal.app:
             ,("\ESC[5D", ctrlKey $ simpleKey LeftKey)
             ,("\ESC[5C", ctrlKey $ simpleKey RightKey)
-            -- rxvt: (Note: these will be superceded by e.g. xterm-color,
+            -- rxvt: (Note: these will be superseded by e.g. xterm-color,
             -- which uses them as regular arrow keys.)
             ,("\ESC[OD", ctrlKey $ simpleKey LeftKey)
             ,("\ESC[OC", ctrlKey $ simpleKey RightKey)

System/Console/Haskeline/Backend/Win32.hsc

@@ -144,7 +144,7 @@ data InputEvent = KeyEvent {keyDown :: BOOL,
                           unicodeChar :: Char,
                           controlKeyState :: DWORD}
             -- TODO: WINDOW_BUFFER_SIZE_RECORD
-            -- I cant figure out how the user generates them.
+            -- I can't figure out how the user generates them.
            | WindowEvent
            | OtherEvent
                         deriving Show

System/Console/Haskeline/Vi.hs

@@ -81,7 +81,7 @@ insertChars = useChar $ loop []
                                                 >|> return . Left
 
 -- If we receive a ^D and the line is empty, return Nothing
--- otherwise, act like '\n' (mimicing how Readline behaves)
+-- otherwise, act like '\n' (mimicking how Readline behaves)
 eofIfEmpty :: (Monad m, Save s, Result s) => Command m s (Maybe String)
 eofIfEmpty s
     | save s == emptyIM = return Nothing