Printers, refactored (partially reworked) bins support, implemented cups missing part

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41171 4005530d-fff6-0310-9dd1-cebe43e6787f
Printers, updated dialogs sample

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41172 4005530d-fff6-0310-9dd1-cebe43e6787f