A typo in l3drivers


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4611 de43f980-851b-0410-b2f7-c40aca1f87e0
Another minor typo in the text in l3drivers


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4612 de43f980-851b-0410-b2f7-c40aca1f87e0
Switch driver DocStrip guards to always 'opt-in'

Fixing the (x)dvipdfmx bug will require some driver changes and make the
DocStrip a bit more complex. At the same time, adding new drivers will further
complicate the .dtx. The best approach is therefore not to use 'opt-out (`!`
syntax) but only 'opt-in'.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4613 de43f980-851b-0410-b2f7-c40aca1f87e0