This patch implements the necessary qOffsets logic tso that a uclinux hosted 
gdbserver can tell a remote gdb what the text & data offsets are.  It also uses 
vfork on such systems.

This implementation clearly separates the gdb protocol pieces of qOffsets from 
the system specific pieces of determining the offsets.  The original diff I 
found on the uclinux site did not have such a separation, I used that 
implementation for inspiration.

Tested on a m5208evb hosted uclinux system.

ok?

nathan
-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::         CodeSourcery
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk