In "basic" mode, normally un trusted certificates get to be trusted if they are
manually trusted by user. This provides an SSH like private key auth mechanism.
Expired certificates were considered invalid in this mode which does not make
much sense.
* src/bip: warn the user about rlimits upon start and whenever they're
reached
* src/bip: add -v flag (show version)
* src/bip: add admin option to user block, and restrict some commands to
admins. Log whenever a /bip command is used
* src/bip: enhance /BIP LIST and HELP commands, add INFO command
* src: fix defaults user/nick/realnames not loaded into connections,
resulting in segfault (WRITE_LINE1 to NULL) and oidentd.conf file not
containing usernames
* src: add default.h and version.h
* src: fflush() system log every log_sync_interval
* src/bip: fix "Resetted." printed whenever a client talks with
backlog_reset_ontalk true
* src/bip: fix backlog user options not set to defaults in add_user
* src/bip: fix oidentd.conf config written lately. Still some issues
* src/util: add human readable time hrtime(), bool2text() and ssl
checlmode2text() functions
* src: lower RECONN_TIMER + add RECONN_TIMER_MAX option
* src/bip: code some validate_config
