LazUtils: Create destination dirs in CopyDirTree(). Fixes a regression.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41939 4005530d-fff6-0310-9dd1-cebe43e6787f
Revert r41936 because Run Parameters dialog lost its existing history lists.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41940 4005530d-fff6-0310-9dd1-cebe43e6787f