Merge pull request #505 from toxeus/apiMerge

OT_ME: merge called function into caller()
Fix OTCaller binding
fix OTCallback wrapper
add package name for java swig
Merge pull request #507 from mhamrle/swig_bindings

Swig bindings
Disable SOVERSION on android, set library version to wrapper libraries
Merge pull request #508 from mhamrle/library_version

Library version
OT_ME: merge called function into pay_dividend()
OT_ME: merge called function into activate_smart_contract()
OT_ME: merge called function into cancel_payment_plan()
OT_ME: merge called function into kill_payment_plan()
OT_ME: merge called function into kill_market_offer()