#1 updated code to TWS API 9.65

[Ger Hobbelt]

see the github repo where I track TWS C API:

https://github.com/GerHobbelt/tws_c_api/commit/700e37a409ca3310ecbf0477ac5232d915a86c5b

Extra edits in there:

send_double() and send_double_max() take a regular double instead of a pointer-to-double (pass by ref is useless there)

added ticker type enum from Java master. TODO: adjust types in the related event prototypes and tws_* functions.