SynEdit search: Fix searching multi-line text. Found text could have longer lines (Pattern expected line-end), if start matched. 

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39845 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: Current word markup: reduce search overhead

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@39846 4005530d-fff6-0310-9dd1-cebe43e6787f