PLAT-6545 MultiplecurrencyAmount: Reduce redundant map copies
PLAT-6546 Speed up curve lookup by optimising curve type hashCode
PLAT-6547 Speed up annuity pricing by avoiding intermediate objects
Merge branch 'develop' into topic/PLAT-6545

* develop:
  Checkstyle
  PLAT-6544 - Regenerate Joda Bean to synchronize comments
  PLAT-6544 - Fix test
  PLAT-6544 - Include stack trace in Failure
PLAT-6545 minor tidy up from review
Merge pull request #71 from OpenGamma/topic/PLAT-6545

Various performance improvements