Removed an overzealous optimization: we must record the entry and length in
fix_state() despite of them not changing in inc_key_loop(), because
save_state() might be called before the very first call to fix_state() from
inc_key_loop() and in that case it must record a previous entry and length.
Exclude sending of signals to child processes in DJGPP builds (untested)
If we're the main process for a --fork'ed group of children, leave our .rec
file around until the children terminate
Merge branch 'master' into bleeding-jumbo

* master:
  If we're the main process for a --fork'ed group of children, leave our .rec file around until the children terminate
  Exclude sending of signals to child processes in DJGPP builds (untested)
  Removed an overzealous optimization: we must record the entry and length in fix_state() despite of them not changing in inc_key_loop(), because save_state() might be called before the very first call to fix_state() from inc_key_loop() and in that case it must record a previous entry and length.

Conflicts:
	src/inc.c
	src/signals.c