Fixes HTTP redirects from within .htaccess files.

  The RewriteBase was not replaced correctly
  due to a nasty for-loop bug. Now
      RewriteEngine on
      RewriteBase   /~coar
      RewriteRule   ^FOO$  BAR [R]
  will also work for you, Ken ;-)
and fixes some typos in the comments.

Submitted by: Ralf S. Engelschall <rse@engelschall.com>
Reviewed by: Ken Coar, Roy Fielding


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77907 13f79535-47bb-0310-9956-ffa450edef68