Tom Kaminski authored May 10, 2015 and Yonas Yanfa committed May 10, 2015

Issue #1965178 by ttkaminski: _syntaxhighlighter_get_lib_location is not robust when other libraries have similar directory structures

#1589140 ssenart, melon, nothinghere, fizk: Ignore plupload directory when looking for the SyntaxHighlighter library.

Fix 1139828: wrong URL in message after initial install. And some minor clean up in README.txt and info description messages

normalize Windows '\' to '/' from return of _syntaxhighlighter_file_directory_path() as reported by Jelle_S