asynchronous on start, which is achieved by this 1st commit.
For this to work, the init_conf() stuff has been split to an
earlier call to conf_start() and then a loop where you can
check for conf_check_complete().
This means init_conf() no longer calls load_conf, as that
is moved to conf_start() and conf_check_complete().
Thus, init_conf() is now only called when all includes are in the
linked list 'conf_include'.
This is work in progress and breaks:
1) rehashes
2) compiling without curl
3) possibly cached remote includes
Bram Matthys
9e887ea4e9