FPDebug: conditional usage of windows unit / updates following fpdebug

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44026 4005530d-fff6-0310-9dd1-cebe43e6787f
FPDebug: mem-manager

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44027 4005530d-fff6-0310-9dd1-cebe43e6787f