rsync security, bug fix, and enhancement update

[3.0.6-4]

• fix #700450 - free parsed hostnames
• fix #575022 - set TZ variable after chroot
  [3.0.6-3]
• Add upstream patch to fix CVE-2011-1097 - Incremental file-list
  corruption due to temporary file_extra_cnt increments
  Resolves: #688923
  [3.0.6-2]
• Remove BuildRequires dependency on popt-devel, until the package
  is being shipped with RHEL-5 (resolve build issues)
  [3.0.6-1]
• Rebase to upstream version 3.0.6
  Resolves: #339971, #471182, #575022, #616093
• Make ‘-d, --dirs options’ behaviour backward-compatible with 2.6.8
  Resolves: #339971 (comment #5)
• Truncate a copied sparse file at the end of transaction (-S, --sparse option)
  Resolves: #530866
• Add -fno-strict-aliasing to CFLAGS
• Remove obsolete rsync-2.6.8-xattr_bug.patch
• Switch license to GPLv3+ (upstream change beginning with 3.0.0)