MINOR: http: add a new "http-request replace-uri" action

This action is particularly convenient to replace some deprecated usees
of "reqrep". It takes a match and a format string including back-
references. The reqrep warning was updated to suggest it as well.
diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c
index d659779..6c18bfc 100644
--- a/src/cfgparse-listen.c
+++ b/src/cfgparse-listen.c
@@ -3866,7 +3866,7 @@
 	}
 	else if (!strcmp(args[0], "cliexp") || !strcmp(args[0], "reqrep")) {  /* replace request header from a regex */
 		if (!already_warned(WARN_REQREP_DEPRECATED))
-			ha_warning("parsing [%s:%d] : The '%s' directive is deprecated in favor of 'http-request replace-header' and will be removed in next version.\n", file, linenum, args[0]);
+			ha_warning("parsing [%s:%d] : The '%s' directive is deprecated in favor of 'http-request replace-uri' and 'http-request replace-header' and will be removed in next version.\n", file, linenum, args[0]);
 
 		if (*(args[2]) == 0) {
 			ha_alert("parsing [%s:%d] : '%s' expects <search> and <replace> as arguments.\n",