Hi...

Due to recent changes in gdb's signal handling, the addition of dprintf 
and changes to blocks gdbtk was no longer compiling. I committed the 
attached simple patch to fix this.

Changelog:
2012-05-25  Roland Schwingel  <roland.schwingel@onevision.com>

    * generic/gdbtk-bp.c (gdb_set_bp): Add new NULL param
    to call to create_breakpoint() due to changes in gdb.
    * generic/gdbtk-cmds.c (gdb_listfuncs): Iterator param
    in call to ALL_BLOCK_SYMBOLS() now is a pointer to
    struct block_iterator instead of struct dict_iterator.
    * generic/gdbtk-stack.c (gdb_block_vars,gdb_get_blocks)
    (gdb_get_vars_command): Likewise.
    * generic/gdbtk-hooks.c (gdbtk_annotate_signal): Change
    function calls: target_signal_to_name -> gdb_signal_to_name
    target_signal_to_string -> gdb_signal_to_string due to
    recent changes in gdb.

I hope this was ok as it blocked reintegration of my other patches.

Roland