dirmngr: Rework of the LDAP code, part 1.

* dirmngr/http.h (struct parsed_uri_s): Add flag is_ldap.
* dirmngr/http.c (do_parse_uri): Set flag.  Do not error out for a
missing slashes in an http scheme if NO_SCHEME_CHECK is active.
* dirmngr/t-http.c (main): Print new flag.
* dirmngr/ks-engine-ldap.c (ks_ldap_help): Use flag instead of
checking the scheme.
* dirmngr/ldap-parse-uri.c (ldap_uri_p): Re-implement using
http_parse_uri.
* dirmngr/t-ldap-parse-uri.c (main): Add option --verbose.
--

This patch merely remove the separate parser for checking for an LDAP
scheme.  It is better to let our generic URI parser handle this.  Also
fixes this bug
       || url[4] == 'i' || url[4] == 'i')
to make the rarely used ldapi scheme case-insensitive.

More changes to the LDAP code are planned.

Signed-off-by: Werner Koch <wk@gnupg.org>

dirmngr/t-http.c

@@ -419,8 +419,9 @@ main (int argc, char **argv)
             }
           putchar ('\n');
         }
-      printf ("Flags :%s%s%s%s\n",
+      printf ("Flags :%s%s%s%s%s\n",
               uri->is_http? " http":"",
+              uri->is_ldap? " ldap":"",
               uri->opaque?  " opaque":"",
               uri->v6lit?   " v6lit":"",
               uri->onion?   " onion":"");