Naming style changes, finally got tired of most of the typedefs. Also the previous enum -> macro change reverted so that we don't use the highest bit anymore, that's incompatible with old indexes so they will be rebuilt.

#ifndef __LIB_SIGNALS_H
#define __LIB_SIGNALS_H

extern int lib_signal_hup, lib_signal_kill;

void lib_init_signals(void (*sig_quit_handler) (int));

#endif