Use \cs:w ... \cs_end: for \new... allocators

Plain TeX defines these macros as \outer, and so for a 'generic' loader these
will need to be used by name.

(There are a couple of ways that the generic code might be set up, but for
these particular cases it's not that important how it's done: changing for
'all non-format versions' is easiest.)


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4697 de43f980-851b-0410-b2f7-c40aca1f87e0