Hi,

Here is the new patch that migrates win32-nat.c to the new
solib-target.c solib support, finally enabling a native cygwin
gdb to take advantage of the new gdbserver dll support.

The core dump support migrated into its own patch, which
moves it into i386-cygwin-tdep.c, so this consists mostly
of win32-nat.c changes.  It should only be applied after
my previous patch is in.

This patch removes references to master_so_list, by reverting
to the same method the current cvs version uses, except that
the current version was broken when cygwin1.dll wasn't
loaded at its prefered load address (was relocated).
I've ensured that this version still correctly ignores
the internal cygwin exceptions.  I'm sorry to have shoving
in more funcionality than was needed in the previous rounds
and for triggering extra review work ...  If we ever meet,
you can splap me in my forehead (once).  :)

Cheers,
Pedro Alves