From Christian Holm: TSystemDirectory::IsItDirectory, the code changes directory to the directory of the current object. Make sure it resets to the original directory.  Fixes issue #90011.
From Christian Holm:
TSystemDirectory::IsItDirectory, the code changes directory to the directory
of the current object. Make sure it resets to the original directory. 
Fixes issue #90011.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@42564 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