Log Message:
Update to 0.64

Changelog:
Version 0.64 (Mon Feb 09 2015)
  - Check for series file consistency
  - Performance: Several optimizations
  - Test suite: Several fixes and coverage improvements
  - Test suite: Run the tests in predictable order
  - files: Add support for unapplied patches
  - graph: Check for graphviz availability
  - mail: Remove procmail dependency
  - mail: Don't include the release number in User-Agent
  - pop: Add --refresh option
  - push: Add --refresh option
  - push: Do not use interactive mode with -f
  - setup: Skip version check
  - setup: Check for rpmbuild availability
  - setup: Handle long options passed to tar
  - setup: Several cleanups and minor fixes
  - setup: Major performance optimizations
  - setup: Fix path to extra patches in series file
  - setup: Trace calls earlier
  - setup: Add --fast option
  - setup: Fix link creation
  - quilt.el: Fix tramp support
  - quilt.el: Fix patch select completion

Version 0.63 (Sun May 25 2014)
  - New NEWS file, containing a human-readable changelog
  - Option -E is no longer passed to patch by default
  - Huge performance improvement (e.g., for commands series, applied and
    unapplied)
  - configure: Add compat symlinks for md5sum
  - Return 2 when there is nothing to do, contrasting with errors (ret=1)
  - Exit with an error when diff's retcode=2 (error) on patch refresh
  - bash_completion: cleanups and performance improvement (Savannah's #27111)
  - test/run: Use perl module Text::ParseWords (+ performance improvement)
  - Add some tests to our testsuite, for a better coverage
  - Fix heuristic for unapplied patches with timestamps
  - Bug fix: Patches emptying files should work now
  - Bug fix: Check for duplicate patch in series (Savannah's #20628)
  - Portability fixes for older Bash and GNU patch

Version 0.62 (Wed May 07 2014)
  - Was a buggy release, with an incomplete tarfile