LCL: check for Interfaces unit for clipboard. It can be missing when clipboard is used in cmd line prog and LCL dependency added manually.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42446 4005530d-fff6-0310-9dd1-cebe43e6787f
Converter: fix comment

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@42447 4005530d-fff6-0310-9dd1-cebe43e6787f