Fix automatic restoration of breakpoints memory for ia64.
* ia64-tdep.c: New #if check on BREAKPOINT_MAX vs. BUNDLE_LEN.
(ia64_memory_insert_breakpoint): New comment part for SHADOW_CONTENTS
- content. Remove variable instr. New variable cleanup. Force
+ content. Remove variable instr. New variable cleanup. Disable
automatic breakpoints restoration. PLACED_SIZE and SHADOW_LEN are now
set larger, to BUNDLE_LEN - 2. Variable `bundle' type update. Return
error if even just final target_write_memory has failed.