patch applied (packages/readline): #2053: add additional history functions

[Simon Marlow]

Mon Jan 21 21:05:36 PST 2008  alexander.dunlap at gmail.com
  * #2053: add additional history functions
  The following functions were added: readHistory, writeHistory, appendHistory, historyTruncateFile, clearHistory, stifleHistory, unstifleHistory, historyIsStifled, historyMaxEntries

    M ./System/Console/Readline.hsc +85