Log Message:
Update dar to version 2.3.4:

Pkgsrc changes:

- Use an option group for dar-int32 Vs dar-int64 Vs neither (infinint)
- Default to dar-int64 (the infinint support is excessive, and hugely
  expensive)
- REPLACE_FOO doesn't work if FOO isn't a dependency, and we don't want to
  pull in Bash and Perl just for a few samples!  So, don't replace the
  interpreters in the samples, just leave them as is.

ChangeLog from 2.3.3 to 2.3.4:

- fixed behavior when differential backup is interrupted (no more store file
  that would have been read if no interruption had been done as "deleted"
  since thearchive of reference) [SF #1669091].
- added official method to access catalogue's statistics through the API (for
  kdar next version).
- Fixed syntax error in dar_par_create.duc and dar_par_test.duc files
  (Parchive integration with dar).
- minor spelling fix in error message (compressor.cpp)
- added Wiebe Cazemier's two patches for dar man page
- integrated patch from Dwayne C. Litzenberger to fix weakness in dar's
  implementation of the blowfish encryption.
- improved the returned message when an invalid path is given as argument
- updated doc/sample/sample1.txt script file