Merge branch 'jl/nor-or-nand-and'

Eradicate mistaken use of "nor" (that is, essentially "nor" used
not in "neither A nor B" ;-)) from in-code comments, command output
strings, and documentations.

* jl/nor-or-nand-and:
  code and test: fix misuses of "nor"
  comments: fix misuses of "nor"
  contrib: fix misuses of "nor"
  Documentation: fix misuses of "nor"

builtin/pack-objects.c

@@ -1076,7 +1076,7 @@ static int pbase_tree_cache_ix_incr(int ix)
 static struct pbase_tree {
 	struct pbase_tree *next;
 	/* This is a phony "cache" entry; we are not
-	 * going to evict it nor find it through _get()
+	 * going to evict it or find it through _get()
 	 * mechanism -- this is for the toplevel node that
 	 * would almost always change with any commit.
 	 */