Fixed missing class argument when throwing exception
merged branch xamado/master (PR #6884)

This PR was submitted for the master branch but it was merged into the 2.1 branch instead (closes #6884).

Commits
-------

c261760 Fixed missing class argument when throwing exception

Discussion
----------

Added missing parameter to Exception in DebugClassLoader

The DebugClassLoader was missing the $class argument to sprintf() when it tries to throw the exception, making the actual error you are getting more daunting :)

---------------------------------------------------------------------------

by stof at 2013-01-25T23:31:58Z

oops, sorry.

@fabpot this should be merged in 2.1 as you merged the change there