prefixed.  Fixes bug #6067.

Initialize both the Globals and Locals back to their default values
when reading the config.  This fixes a bug where locals set in the
global section were not getting reset to their default value if the
config item was removed from the file.

- global -> global_vars
- section -> local_vars
- global_and_section -> all_vars

a compiler warning that was just introduced.  Also avoids changing the
host string to lower-case in access.c (by using iwildmatch()).

(Bug #6020)

- Backups do not interfere with an atomic update (when possible).
- Backing up a file will remove a directory that is in the way
  and visa versa.
- Unify the backup-dir and non-backup-dir code in backup.c.
- Improved the backup tests a little bit.

This fixes an issue with -K noticed by eric casteleijn, avoids some
inconsistent itemizing when a file/dir is replaced by a dir/file,
and removes a now-obsolete chunk of code from make_file().

(see f41152d3), so remove the inaccurate
"p" from the man page.  Noticed by Jacob Balazer:

http://lists.samba.org/archive/rsync/2008-November/022022.html