patch 9.0.1390: FOR_ALL_ macros are defined in an unexpected file

Problem:    FOR_ALL_ macros are defined in an unexpected file.
Solution:   Move FOR_ALL_ macros to macros.h.  Add FOR_ALL_HASHTAB_ITEMS.
            (Yegappan Lakshmanan, closes #12109)
diff --git a/src/job.c b/src/job.c
index c3ba3b8..1d18abb 100644
--- a/src/job.c
+++ b/src/job.c
@@ -140,7 +140,7 @@
 	return OK;
 
     todo = (int)dict->dv_hashtab.ht_used;
-    for (hi = dict->dv_hashtab.ht_array; todo > 0; ++hi)
+    FOR_ALL_HASHTAB_ITEMS(&dict->dv_hashtab, hi, todo)
 	if (!HASHITEM_EMPTY(hi))
 	{
 	    item = &dict_lookup(hi)->di_tv;