Patch to fix dialyzer expan_files bug

[Ahmed Omar]

git fetch git://github.com/spawnthink/otp.git dialyzer_expand_files_bug

Please note that the functionality of expanding the files list is
implemented in two different places in dialyzer application.
Once in dialyzer_cl and another in dialyzer_analysis_callgraph. dialyzer_cl
already pass the files list to dialyzer_analysis_callgraph
Which means dialyzer will iterate twice on the list of files in that case. I
suggest moving the implementation into once place as an improvement.
I can work on that if you agree.

-- 
Best Regards,
- Ahmed Omar
http://nl.linkedin.com/in/adiaa
Follow me on twitter
@spawn_think <http://twitter.com/#!/spawn_think>