[PLAT-6851] remove some top level functions to ensure compilation
[PLAT-6851] remove deprecated test methods
[PLAT-6851] remove more deprecated methods
[PLAT-6851] Remove deprecated from CouponON
[PLAT-6851] remove top level deprecated interface and make code compile!
[PLAT-6851] fix up tests
[PLAT-6851] fix up final set of failing tests
Merge pull request #268 from OpenGamma/REQS-666/PLAT-6851-6

REQS-666/PLAT-6851 Stage 6 (final stage)