FD-PIC patches for uClibc

[Bernd Schmidt]

These are the FD-PIC patches necessary to get ld.so working on the
Blackfin.  These were originally written by Alex Oliva for the FRV and
updated to work with current uClibc sources by myself.

I'm posting these for review; I intend to check them in in a few days if
there are no objections.

Note that I can't really test these yet since upstream uClibc isn't
entirely working yet on the Blackfin, but at least for ld.so it's now
near-identical to the working code in our repository.


Bernd
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