Remove http.authAny

Back when the feature to use different HTTP authentication methods was
originally written, it needed an extra HTTP request for everything when
the feature was in effect, because we didn't reuse curl sessions.

However, b8ac923 (Add an option for using any HTTP authentication scheme,
not only basic, 2009-11-27) builds on top of an updated codebase that does
reuse curl sessions; there is no need to manually avoid the extra overhead
by making this configurable anymore.

Acked-by: Martin Storsjo <martin@martin.st>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config.txt

@@ -1158,13 +1158,6 @@ http.noEPSV::
 	support EPSV mode. Can be overridden by the 'GIT_CURL_FTP_NO_EPSV'
 	environment variable. Default is false (curl will use EPSV).
 
-http.authAny::
-	Allow any HTTP authentication method, not only basic. Enabling
-	this lowers the performance slightly, by having to do requests
-	without any authentication to discover the authentication method
-	to use. Can be overridden by the 'GIT_HTTP_AUTH_ANY'
-	environment variable. Default is false.
-
 i18n.commitEncoding::
 	Character encoding the commit messages are stored in; git itself
 	does not care per se, but this information is necessary e.g. when

http.c

@@ -40,9 +40,6 @@ static long curl_low_speed_time = -1;
 static int curl_ftp_no_epsv;
 static const char *curl_http_proxy;
 static char *user_name, *user_pass;
-#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
-static int curl_http_auth_any = 0;
-#endif
 
 #if LIBCURL_VERSION_NUM >= 0x071700
 /* Use CURLOPT_KEYPASSWD as is */
@@ -197,12 +194,6 @@ static int http_options(const char *var, const char *value, void *cb)
 			http_post_buffer = LARGE_PACKET_MAX;
 		return 0;
 	}
-#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
-	if (!strcmp("http.authany", var)) {
-		curl_http_auth_any = git_config_bool(var, value);
-		return 0;
-	}
-#endif
 
 	/* Fall back on the default ones */
 	return git_default_config(var, value, cb);
@@ -254,8 +245,7 @@ static CURL *get_curl_handle(void)
 	curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
 #endif
 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
-	if (curl_http_auth_any)
-		curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
+	curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 #endif
 
 	init_curl_http_auth(result);
@@ -408,11 +398,6 @@ void http_init(struct remote *remote)
 	if (getenv("GIT_CURL_FTP_NO_EPSV"))
 		curl_ftp_no_epsv = 1;
 
-#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
-	if (getenv("GIT_HTTP_AUTH_ANY"))
-		curl_http_auth_any = 1;
-#endif
-
 	if (remote && remote->url && remote->url[0]) {
 		http_auth_init(remote->url[0]);
 		if (!ssl_cert_password_required &&