[svn] Commit several minor changes:

[svn] Commit several minor changes:

* main.c (print_help): Document `--no-http-keep-alive'.

* utils.c (numdigit): Handle negative numbers *correctly*.

* hash.c (make_nocase_string_hash_table): Use term "nocase" rather
than the confusing "unsigned".

* utils.c (string_set_contains): Renamed from string_set_exists.

* hash.c (hash_table_contains): Renamed from hash_table_exists.

* cookies.c: Move case-insensitive hash tables to hash.c.

Published in <sxsheyq9vvl.fsf@florida.arsdigita.de>.