mvn-make-tar.sh: fix arg passing

Don't use -X -e (it generates too much output), but do allow extra
arguments to be passed from the command-line.

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
multitool.sh: fix ssh introducing thing (-I)

The introduce-ssh-nodes-to-each-other functionality should also do
127.0.0.1 and 0.0.0.0.

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
add cmakegrep

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
add mvn-all-347-tests.sh

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
add mvn-build-docs.sh

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>