Qt: one more minor optimization for TQtBitBtn.preferredSize.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43627 4005530d-fff6-0310-9dd1-cebe43e6787f
Clean outdated DEFINEs from the code, like old compiler versions and FPC_HAS_CONSTREF.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43628 4005530d-fff6-0310-9dd1-cebe43e6787f
SqlDb: Remove wrong {$IFDEF VER2_5_1}. Now SQL Parser is enabled again.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43629 4005530d-fff6-0310-9dd1-cebe43e6787f
SqlDb: commit generated .po files.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43630 4005530d-fff6-0310-9dd1-cebe43e6787f
Package editor: Fix a bug that prevented moving files up/down.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43631 4005530d-fff6-0310-9dd1-cebe43e6787f
Package editor: disable Up/Down buttons when a removed file is selected.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43632 4005530d-fff6-0310-9dd1-cebe43e6787f
Package editor: prevent excess method calls by disabling OnSelectionChanged temporarily.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43633 4005530d-fff6-0310-9dd1-cebe43e6787f
Package editor: add shortcut keys VK_DELETE and VK_INSERT. Part of issue #20140

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43634 4005530d-fff6-0310-9dd1-cebe43e6787f
TreeFilterEdit: Small optimization + fix comment.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43635 4005530d-fff6-0310-9dd1-cebe43e6787f
Package editor: formatting

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43636 4005530d-fff6-0310-9dd1-cebe43e6787f