[basic.stc.auto] Fix apparent contradiction: the `static` implied by
`thread_local` is not explicit, so this wording could be read as
claiming that `thread_local` local variables have automatic storage
duration, contradicting wording in several other parts of the standard
and the design intent.
Added missing line breaks for wording incorporated from N4230.
Merge pull request #413 from rkawulak/patch-1

[namespace.def] Added missing line breaks for wording incorporated from N4230.
Editorial fixes from review by Mike Miller.
[re.regiter.incr] fix typo

The fuction position() is a member of the match_results, not a member of the sub_match.
Merge pull request #415 from kariya-mitsuru/fixtypo

[re.regiter.incr] Refer to match_results::position, not the non-existent sub_match::position.
[dcl.fct] Format '...' in fixed-width font in the grammar and when it's
later referred to in the text.