codetools: fixed directory cacher FindUnitSource

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41202 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: source editor: ifdefnode: sync codebuffer

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41203 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: source editor: fixed typo

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41204 4005530d-fff6-0310-9dd1-cebe43e6787f