Merge branch 'jk/a-thread-only-dies-once' into maint

* jk/a-thread-only-dies-once: run-command: use thread-aware die_is_recursing routine usage: allow pluggable die-recursion checks

Junio C Hamano committed Apr 26, 2013 at 11:25 UTC 7a011aac0ef32e1b4835284c3ca6360729d7b83b

No changes.