Merge changes from topic "apply"

Merge changes from topic "apply"

* changes:
  ApplyCommand: fix "no newline at end" detection
  ApplyCommand: handle completely empty context lines in text patches
  ApplyCommand: use byte arrays for text patches, not strings
  ApplyCommand: support binary patches
  ApplyCommand: add a stream to apply a delta patch
  ApplyCommand: add streams to read/write binary patch hunks
  ApplyCommand: add a base-85 codec
  ApplyCommand: convert to git internal format before applying patch