refs.c: convert it to use lockfile interface.
authorJunio C Hamano <junkio@cox.net>
Tue, 6 Jun 2006 20:54:14 +0000 (13:54 -0700)
committerJunio C Hamano <junkio@cox.net>
Tue, 6 Jun 2006 21:30:58 +0000 (14:30 -0700)
This updates the ref locking code to use creat-rename locking
code we use for the index file, so that it can borrow the code
to clean things up upon signals and program termination.

Signed-off-by: Junio C Hamano <junkio@cox.net>

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