DSO linking changes for wheezy

[Matthias Klose <doko@debian.org>]

For wheezy I'm planning to change the linking behaviour for DSOs (turning on 
--as-needed and --no-copy-dt-needed-entries. The rationale is summarized in 
http://wiki.debian.org/ToolChain/DSOLinking. I would like to know about issues 
with these changes on some of the Debian ports, and if we need to disable one of 
these changes on some port.

Thanks, Matthias