New container class TDictionaryStringList for LazUtils

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40516 4005530d-fff6-0310-9dd1-cebe43e6787f
LazUtils: formatting

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40517 4005530d-fff6-0310-9dd1-cebe43e6787f
LazUtils: add new container TDictionaryStringList

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40518 4005530d-fff6-0310-9dd1-cebe43e6787f