Minor quoting etc. fixes to Emacs manual

Minor quoting etc. fixes to Emacs manual

* doc/emacs/Makefile.in, doc/emacs/ack.texi, doc/emacs/building.texi:
* doc/emacs/calendar.texi, doc/emacs/cmdargs.texi:
* doc/emacs/custom.texi, doc/emacs/dired.texi, doc/emacs/emacs.texi:
* doc/emacs/files.texi, doc/emacs/glossary.texi, doc/emacs/gnu.texi:
* doc/emacs/indent.texi, doc/emacs/macos.texi:
* doc/emacs/maintaining.texi, doc/emacs/makefile.w32-in:
* doc/emacs/programs.texi, doc/emacs/rmail.texi:
* doc/emacs/search.texi, doc/emacs/trouble.texi:
* doc/emacs/vc1-xtra.texi:
Use American-style double quoting in ordinary text,
and quote 'like this' when single-quoting in ASCII text.
Also, fix some minor spacing issues.