BackupPC Files

BackupPC 4.1.3 is a bug fix release:

* Merged pull requests: #109, #114

* Fixed editing of compound menu variables (eg: BackupFilesOnly).

* Made tarPipe in lib/BackupPC/Xfer/Tar.pm non-blocking to avoid a
  reported deadlock when BackupPC's select() returns ok for reading,
  but there are no bytes to read from the client tar's log/stdout
  output.  Thanks to Matt Bedynek for running various tests and
  providing debugging insights to track this down.

* Better error checking when using $f->read() on pool files.
  Thanks to Cody Jackson for tracking down this issue, related to
  reading corrupted compressed pool files.  There's also an
  additional fix in backuppc-xs (version 0.54).

* Cleans up any orphan temporary pool writing files.

* Fixed utf-8 output in SCGI.

* Fixed a reference counting bug in BackupPC_tarExtract.

* Fixed	rsync restore transfer byte total, reported by Alexander
  Moisseev

* Replaced logo href with https://backuppc.github.io/backuppc.

* On a v3->v4 upgrade, remove the new --one-file-system flag from the new
  RsyncArgs if it wasn't there before.

* Added /usr/local/bin to search path in configure.pl from Alexander
  Moisseev (#109).

* Avoid missing or extra quotes when replacing misused undef or
  empty string values in configure.pl from Alexander Moisseev
  (#114).

* Chasing down a still unsolved bug with help from Lano and Dieter Fauth
  where newly added pool files in uncompressed backups get removed
  by BackupPC_refCountUpdate during a long-running backup, or if
  BackupPC_migrateV3toV4 is running.  Two workarounds added in this
  release: BackupPC_migrateV3toV4 will now exit if BackupPC is running,
  and BackupPC_refCountUpdate only removes pool files that are more than
  a week old.