Description of problem:
I tried push a solaris packages to Satellite 5.8. This version of product doesn't support solaris architecture (include pushing of package). I think that some message should be shown instead of errors.


Version-Release number of selected component (if applicable):
spacewalk-backend-server-2.5.3-23.el6sat.noarch

How reproducible:
always

Steps to Reproduce:
1. rhnpush -c test-channel-x86_64-4 *.mpm

Actual results:
Internal Server Error

Expected results:
Without ISE and show some corresponding message

Additional info:
>> tail /var/log/httpd/error_log

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/spacewalk/server/apacheUploadServer.py", line 103, in _wrapper
    ret = function(req)
  File "/usr/share/rhn/upload_server/handlers/package_push/package_push.py", line 125, in handler
    relative_path=self.rel_package_path, org_id=self.org_id)
  File "/usr/lib/python2.6/site-packages/spacewalk/server/rhnPackageUpload.py", line 158, in push_package
    importer.run()
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/importLib.py", line 668, in run
    self.submit()
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/packageImport.py", line 313, in submit
    transactional=self.transactional)
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/backend.py", line 756, in processPackages
    transactional=transactional)
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/backend.py", line 1616, in __processObjectCollection__
    _buildExternalValue(extObject, object, parentTableObj)
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/backend.py", line 2113, in _buildExternalValue
    dict[f] = sanitizeValue(entry[attr], datatype)
  File "/usr/lib/python2.6/site-packages/spacewalk/server/importlib/backendLib.py", line 518, in sanitizeValue
    return int(value)
TypeError: int() argument must be a string or a number, not 'list'