- rdiff: it's now possible to choose exactly which vservers should be
         backed-up, as it already was with duplicity handler, with the
	 "vsnames" configuration setting

handlers/dup: make use of new lib/vserver functionality

lib/vserver.in [init_vservers] : canonicalize VROOTDIR (since duplicity et al. don't follow symlinks)

(I hate duplicated code!)

example.dup: fixed example vsnames syntax

handlers/dup: now works when multiple vservers names are given (separated by space) in vsnames config variable

duplicity handler: warn if vsnames or vsinclude is enabled while vservers support is disabled in backupninja.conf

. code formatting cleanup (three spaces indent)
. fixed bug which caused only first include/exclude dir to
  have "include = "
. fixed globbing bug with exclude

. code formatting cleanup (three spaces indent)