Bug fixes & DL dependencies when specified

Solves #78 (closed) and #77 (closed) and #76 (closed)

Introduces a scripts/depends.bash $BUILD_FOLDER to download all dependencies to fix version numbers and avoid segfaults because the system was updated and version numbers changed.

You can use configure --with-depends to dl and build dependencies.

src/base/commands.c

@@ -62,7 +62,8 @@ command_update(struct lkt_state *srv, size_t c, char *argv[LKT_MESSAGE_ARGS_MAX]
 }
 
 bool
-command_rescan(struct lkt_state *srv, size_t c, char *argv[LKT_MESSAGE_ARGS_MAX], int forced)
+command_rescan(struct lkt_state *srv, size_t c, char *argv[LKT_MESSAGE_ARGS_MAX],
+               int __attribute__((unused)) forced)
 {
     UNUSED(argv);
     RETURN_UNLESS(lkt_client_auth(srv, c, false), "Failed to authentificate user", false);