Refactor: Cleanup and expand client code to support <version|q|reload|debug>

Further refactoring of the client code.  Supported commands:

- debug:   Toggle PID 1 debug flag
- version: Show Finit version or custom header string
- reload:  Reload config files in /etc/finit.d/, same as SIGHUP

Also supported is the legacy 'init q' command, to reload config.

The 'status' command now supports an optiona '-v', either as an
argument to init itself, or as argument to the command.  When it
is given 'status' lists verbose information about all services.
Currently only the service arguments are listed.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

helpers.h

@@ -95,6 +95,8 @@ int     makepath        (char *path);
 void    ifconfig        (char *ifname, char *addr, char *mask, int up);
 
 int     atonum          (char *str);
+char   *runlevel_string (int levels);
+int     banner          (void);
 
 pid_t   pidfile_read    (char *pidfile);
 pid_t   pidfile_poll    (char *cmd, char *path);