LazUtils: Move FileIsReadOnly to LazFileUtils (and inline it in FileUtil).
Part of the ongoing restructuring of LazFileUtils/FileUtil.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41566 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: help for project page compiler additions

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41567 4005530d-fff6-0310-9dd1-cebe43e6787f