Handle relative paths when Yaws is started in embedded mode
Handle relative paths when Yaws is started in embedded mode

Now, following functions will throw an error if the docroot
directory does not exist:

  * yaws_api:embedded_start_conf/1,2,3,4
  * yaws:start_embedded/1,2,3,4
  * yaws:add_server/2
  * yaws:create_sconf/2

jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws