[RFA]: add reason code and silent flag to decode_line_1

[Andrew Cagney]

For the record.
> On Tue, Dec 09, 2003 at 04:24:34PM -0500, J. Johnston wrote:
> 
>> David, here is the updated patch based on your suggestion.  It is 
>> definitely cleaner in the short-term.
>> 
>> 2003-12-09  Jeff Johnston  <jjohnstn@redhat.com>
>> 
>>     * linespec.h (decode_line_1): Add new not_found_ptr parameter.
>>     * linespec.c (decode_line_1): Add new parameter.  Pass on
>>     new parameter to decode_variable and symtab_from_filename
>>     functions.
>>     (decode_variable): Add new not_found_ptr parameter.  Throw exception
>>     rather than failing if the not_found_ptr is non-null and the
>>     function is not found.
>>     (symtab_from_filename): Add new not_found_ptr parametr.   Throw 
>>     exception
>>     rather than failing if the not_found_ptr is non-null and the
>>     source file is not found.
>>     * breakpoint.c: Change all callers of decode_line_1 to add default
>>     extra parameter for decode_line_1 calls.
>>     * tracepoint.c: Ditto.
>>     * cli/cli-cmds.c: Ditto.
> 
> 
> You'll probably want to fix calls in Insight too.

If/when Red Hat choose to contribute GDB is the time to decide if/when 
Jeff should be asked to fix it.  Not before.

Andrew