HEADSUP: ddb stack trace command name changes

[John Baldwin]

First, the 'traceall' command has been renamed to 'alltrace'.  This allows 
abbreviated versions of 'trace' such as 't' or 'tr' to work again.  It is 
also more consistent with other ddb functions that dump data about multiple 
objects ('show allpcpu', etc.).

Secondly, 'bt' has been added as a new alias for 'trace' which should make 
some gdb-using folks lives easier if they are used to using 'bt' in gdb all 
the time.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org