Builtins should canonicalize path arguments

[Ondrej Oprala]

Hi, I investigated this bug report: 
https://bugzilla.redhat.com/show_bug.cgi?id=987975
and found out that some of bash's builtins (source at the very least) do 
not canonicalize
pathnames given as arguments (builtin "open" is instead fed with the 
path - failing in the BZ case).
The builtin "cd" seems to handle relative paths correctly. I think it 
would be reasonable to take part of
cd's canonicalization code and use it in other builtins as well. I'd 
gladly take care of the patch.
Would upstream consider this a good approach?

Thanks,
Ondrej