* main.c (main): Accept --annotate=N option and make --fullname
the same as --annotate=1.
(command_line_input): Print annotatation before and after prompt.
* blockframe.c (flush_cached_frames): Print annotation.
* Rename frame_file_full_name to annotation_level and move it from
symtab.h to defs.h.
* source.c (identify_source_line): If annotation_level > 1,
change output format.
* breakpoint.c: Print annotation whenever a breakpoint changes.
* main.c: New variable server_command.
(command_line_input): Parse "server " and set server_command.
(dont_repeat): Check server_command.