XML Calabash and logging

Hello world,

I find the subject of logging in Java to be extraordinarly
complicated. I've been trying to work through some weirdness in the
logging behavior of XML Calabash.

Complicated or not, there are clearly some benefits to "doing it
right." In particular, I've removed all those .printStackTrace() calls
and things are moving towards having reasonable info/debug/trace level
messages.

FWIW, I've settled, perhaps mostly by accident, on using SLF4J as a
front end on LOG4J2 with commons-logging-1.1.1 thrown in for good
measure because the Apache HTTP libraries seem to require it.

I've poked at the XML Resolver library code to use those loggers as
well.

If you're curious to see the effects, there's a log-hacking branch
checked into github now (it's going to be transitory, but it'll be
there at least until I can figure out why Travis CI can't get a
passing build with it).

Comments and suggestions most welcome.

                                        Be seeing you,
                                          norm

-- 
Norman Walsh
Lead Engineer
MarkLogic Corporation
Phone: +1 512 761 6676
www.marklogic.com