ld uses builtin default despite -Ttext-segment=ORG

[John Reiser]

ld from binutils-2.20.1 fails to honor -Ttext-segment=ORG
when processing 64-bit binaries on a 32-bit host.  Instead
the text segment gets its address PT_LOAD.p_vaddr from the
default builtin linker script, ignoring the comandline parameter.
The bug, including a short testcase, is:
http://www.sourceware.org/bugzilla/show_bug.cgi?id=11628

I'd like to get this fixed, am diving in to investigate,
and probably will discover where the commandline value
was overwritten or ignored.  But that might not give a good clue
about the proper fix.  Maintainers please comment.  Thank you.

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