IDE: sourceeditor: update ifdef node states on input less idle

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41205 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: Ifdef Markup: keep node state on edit / wait for idle update

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41206 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: Ifdef Markup: reset idle timer on EditorStateChange only

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41207 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: Ifdef Markup: keep node state on edit / wait for idle update

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41208 4005530d-fff6-0310-9dd1-cebe43e6787f