Debugger: refactor locals

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44207 4005530d-fff6-0310-9dd1-cebe43e6787f
Debugger: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44208 4005530d-fff6-0310-9dd1-cebe43e6787f
FPDebug: clean up / fix array len

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@44209 4005530d-fff6-0310-9dd1-cebe43e6787f