Description of problem:
If the user running report doesn't have read permissions to the specified file it results in a python traceback.

Version-Release number of selected component (if applicable):
0.18-3

  
Actual results:
[sdodson@dhcp242-213 ~]$ report /var/log/abrt.log 
Traceback (most recent call last):
  File "/usr/bin/report", line 149, in <module>
    signature = report.createSimpleFileSignature(opts.filename, isBinary)
  File "/usr/lib64/python2.6/site-packages/report/__init__.py", line 222, in createSimpleFileSignature
    { "simpleFile" : NamedFileSignatureValue(exnFileName, isBinary) }
  File "/usr/lib64/python2.6/site-packages/report/__init__.py", line 121, in __init__
    file(fileLocation).read(1)
IOError: [Errno 13] Permission denied: '/var/log/abrt.log'


Expected results:
Clean error message.

Additional info: