* linespec.h: New file. Declarations for linespec.c.
* linespec.c, alpha-tdep.c, breakpoint.c, parse.c, source.c,
symtab.c, tracepoint.c: Include the above.
* completer.c: New file. Line completion stuff for GDB.
(get_gdb_completer_word_break_characters,
get_gdb_completer_quote_characters): New functions. Accessors for
useful completer internal data.
(filename_completer, line_completion_function, skip_quoted): Moved
here from top.c.
* completer.h: New file. Declarations for the above.
* linespec.c (decode_line_1): Use
get_gdb_completer_word_break_characters and
get_gdb_completer_quote_characters.
* top.c: Include completer.h.
(filename_completer, line_completion_function, skip_quoted):
Moved to completer.c.
* corefile.c, exec.c, source.c, symfile.c, linespec.c: Include
completer.h.
* Makefile.in (SFILES): Add completer.c.
(COMMON_OBS): Add completer.o.
(completer.o): New target.
(linespec.o, alpha-tdep.o, breakpoint.o, parse.o, source.o,
symtab.o, tracepoint.o): Add linespec.h to dependencies list.
(corefile.o, exec.o, source.o, symfile.o, linespec.o): Add completer.h
to dependencies list.
(sources_info): Replace use of no_symtab_msg with the string
itself.
* linespec.c (no_symtab_msg): Remove declaration.
(decode_line_1): Replace uses of no_symtab_msg with the string
itself.
