codetools: absolute keyword only for local vars

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43201 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: var initial values only for global vars

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43202 4005530d-fff6-0310-9dd1-cebe43e6787f
codetools: var notes only for global vars

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43203 4005530d-fff6-0310-9dd1-cebe43e6787f