Improve m3box003 test

The old version didn't actually \box_show:N some boxes, meaning that
what was in the log depended on the setting applicable in regression-test.tex.
That shows up with LuaTeX, as since it puts more stuff in each box there
is an "etc." replacing some content. Moving to 'full' boxes and deliberately
showing means that we are in control with \box_show:N.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4869 de43f980-851b-0410-b2f7-c40aca1f87e0
Normalise out some more LuaTeX bugs/variations


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4870 de43f980-851b-0410-b2f7-c40aca1f87e0
Test file was missed in previous commit


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4871 de43f980-851b-0410-b2f7-c40aca1f87e0
Add a pdfTeX-specific test file for the xdvipdfmx driver test

This is the one test that will need a pdfTeX-specific .tlg file, as
in this case the 'default' test file is for XeTeX.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4872 de43f980-851b-0410-b2f7-c40aca1f87e0