add CLIENT_VERSION to twsapi_config.h
fix, gen_twsapi_config_h prints error on stderr
gen_twsapi_config_h, convert comments to debug messages
build fix, don't update twsapi_config.h on error
style, improve comments in twsapi_config.h
twsapi.config.h, remove ib micro version (was just a bad idea)
Merge branch 'twsapi_config.h' into next

* twsapi_config.h:
  twsapi.config.h, remove ib micro version (was just a bad idea)
  style, improve comments in twsapi_config.h
  build fix, don't update twsapi_config.h on error
  gen_twsapi_config_h, convert comments to debug messages
  fix, gen_twsapi_config_h prints error on stderr
  add CLIENT_VERSION to twsapi_config.h