Improve the performance of TProcessUUID::AddUUID by reintroducing the THashList. This significanly improve the performance of reading file with very large number of  directories (A file with 100,000 directories was traversed in more than 8 minutes and is now traversed in 15s) without noticeable affecting small files.
Improve the performance of TProcessUUID::AddUUID by reintroducing the THashList.
This significanly improve the performance of reading file with very large number of 
directories (A file with 100,000 directories was traversed in more than 8 minutes
and is now traversed in 15s) without noticeable affecting small files.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@39055 27541ba8-7e3a-0410-8455-c3a389f83636

bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical,bbockelm/root-historical