fix to fix, twsapi_config.h check d27dd8b7

We can't use -nostdinc if we expect it within default include path.
build, use backtick substitution
Merge branch 'fix_twsapi_config'

* fix_twsapi_config:
  build, use backtick substitution
  fix to fix, twsapi_config.h check d27dd8b7