Each of the new modules, and the updated browse.m, have significantly more
cohesion than the original browse.m.
browser/print_term.m:
A new module containing the parts of the old browse.m that dealt with
printing out terms or their components.
This module exports its services to the updated browse.m and
to trace/mercury_trace_vars.c.
browser/save_term.m:
A new module containing the parts of the old browse.m that dealt with
dumping terms to files.
This module exports its services to trace/mercury_trace_browse.c.
browser/term_paths.m:
A new module containing the parts of the old browse.m that dealt with
operations on paths in terms.
This module exports its services to the updated browse.m,
declarative_user.m, and print_term.m.
browser/browse.m:
Delete the code moved to the new modules.
browser/mdb.m:
Include the three new modules.
browser/term_to_html.m:
Add module qualifiers to some calls to reduce ambiguity.
browser/declarative_user.m:
ssdb/ssdb.m:
trace/mercury_trace_browse.c:
trace/mercury_trace_vars.c:
Conform to the changes above.
