ObjectInspector: locate the arrow on left side vertically better. Issue #26258, patch from Howardpc.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46239 4005530d-fff6-0310-9dd1-cebe43e6787f
Win32 TListView: fix wrong size of checkboxes on Windows XP. Issue #26690, patch from Andrew G. Khodotov.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46240 4005530d-fff6-0310-9dd1-cebe43e6787f