K 10
svn:author
V 4
emax
K 8
svn:date
V 27
2007-08-13T17:19:28.000000Z
K 7
svn:log
V 171
Make ng_h4(4) MPSAFE. Use similar to ng_tty(4) locking strategy.
Reconnect ng_h(4) back to the build.

Reviewed by:	kensmith
Approved by:	re (kensmith)
MFC after:	1 month

END