[PATCH] Documentation: Quote ~(s) causing subscript

This is actually not a series, but a choice. I noticed that git-bundle.html has a stray subscript in the first paragraph of 'Specifying References', so here are two options:

* Documenation: git-bundle: quote tildes that cause subscript

  The minimal-impact change.  Quotes just enough tildes in that
  paragraph to avoid the subscript.

* Documentation: replace [^~] with escapes everywhere

  The global change.  Quotes all tildes and carets to avoid any future
  confusion.

I like the global change better, because any tilde or caret is a possible future pitfall: it will trigger a sub/superscript as soon as a matching delimiter is added within the same paragraph. But of course it makes the ascii non-markup less readable as plain text.

Searching through history and list archives didn't exactly help: as early as babfaba (Fix usage of carets in git-rev-parse(1), 2005-10-05), the {caret} was established. However, in a thread on precisely the paragraph in git-bundle.txt I'm trying to fix,

  http://thread.gmane.org/gmane.comp.version-control.git/50761

the discussion turned to trying to figure out a consistent asciidoc behaviour -- and from there, style guide -- but died. The patch apparently never made it into git.git in either the \~ or the {tilde} form.

- Thomas