Backward Compatibility Breaking Horde Issues (aka Horde 4.0 TODO)

• Fix cloning behavior (See Bug 1410).
  • Remove deprecated code in IMAP_Tree::.
  • Move IMP_IMAPClient:: to Horde.
  • Merge IMP_Thread:: to IMAP_Thread::.
  • Encrypt deprecations in Horde_Crypt_pgp::.
  • Use one place for clear text sendmail error messages.
  • rename files in imp/templates/prefs to more sensible defaults (e.g. draftsfolderselect.inc, not folderselect.inc)
  • Remove deprecated code in MIME_Headers::
  • Remove $foo = &new Foo(); calls and replace with $foo = new Foo(); - The former is deprecated as of PHP 5 and causes errors when strict code checking is on.
  • Remove IMP_Template::.
  • Remove app-specific 'stripe.js' files.
  • Move share edit form into framework package to make it extendable.
  • Convert all configuration files to XML format.
  • Replace horde's popup.js with IMP's version.
  • Remove IMP_IMAP_Search:: and Ingo_IMAP_Search::.
  • Remove imap_reopen() call in IMAP_Search::.
  • Make getType() return values consistent in iCalendar::.
  • Move date/time parsing methods from iCalendar:: to Horde_Date::.
  • Remove BC mime_drivers code in MIME_Viewer::, IMP_Contents::, MIMP_Contents::, Troll_Contents::.