lazutils: TFileSearcher.Search: parameter SearchPath now works as semicologn separated search path

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45991 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: find in files: search in multiple directories

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45992 4005530d-fff6-0310-9dd1-cebe43e6787f