normalize: fix handling of partial filenames/paths

Closes rhbz#996493.

Signed-off-by: Martin Milata <mmilata@redhat.com>
normalize: extend libstdcpp blacklist

Related to: rhbz#996493.

Signed-off-by: Martin Milata <mmilata@redhat.com>
Merge pull request #119 from abrt/rhbz996493

normalize: extend libstdcpp blacklist

Related to: rhbz#996493.

Signed-off-by: Martin Milata <mmilata@redhat.com>