[dcl.fct] Add paragraph breaks into overlong paragraph that covers several
independent topics.
[temp.arg.template] Remove some "call it"s.
[temp.deduct.call] Give a name to the function parameter in an example.
CWG1998 Additional sources of xvalue expressions

Fixed editorially per discussion with CWG; the original wording and
revised wording are normatively equivalent.
[cpp.predefined] Stop trying to reuse a footnote for two different bullets;
that breaks hyperlinking.
Merge branch 'master' of https://github.com/cplusplus/draft