Document the secondary expansion method. Also, some other documentation

cleanups.

If we find a make error (invalid makefile syntax or something like that)
write back any tokens we have before we exit.

If we have waiting jobs (using -j + -l) set an alarm before we sleep on
the read() system call, so we can wake up to check the load and start
waiting jobs, if there are long-running jobs we would otherwise be
waiting for.  Suggested by Grant Taylor.

1 files changed, 1 insertions, 1 deletions

diff --git a/remake.c b/remake.c
index f7cfafb..5f82f03 100644
--- a/remake.c
+++ b/remake.c
@@ -1331,7 +1331,7 @@ name_mtime (char *name)
   if (e != 0)
     {
       if (errno != ENOENT && errno != ENOTDIR)
-        perror_with_name ("stat:", name);
+        perror_with_name ("stat: ", name);
       return NONEXISTENT_MTIME;
     }
   mtime = FILE_TIMESTAMP_STAT_MODTIME (name, st);