LCL: comment

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46548 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL: fixed typo

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46549 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL: implemented TNotebook.ShowControl

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46550 4005530d-fff6-0310-9dd1-cebe43e6787f