Hi,

fix a corruption of ia64 `disass' with breakpoints placed in the target.

It is another part of the Joel Brobecker's ia64-specific breakpoints fix:
[commit] SIGILL in ld.so when running program from GDB on ia64-linux
http://sourceware.org/ml/gdb-patches/2008-04/msg00674.html

Currently ia64-tdep.c considers SHADOW_CONTENTS as a private memory space. But
it is in use by breakpoint_restore_shadows to undo the breakpoints for display.

Not going to speculate here if it may fix a breakpoints functionality.  It is
at least not a regression.  No regressions found (on ia64).  New testcase.


Thanks,
Jan