IDE: fpc msg parser: check package file flag Use Unit

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45618 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: fpc msg parser: check package file flag Use Unit

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45619 4005530d-fff6-0310-9dd1-cebe43e6787f