eb_sim_core: it works now but performance is decreased by the chopper which is needed to talk to the WR-core

socket: add disable_timeout flag to socket structure to prevent checking for environment variable all the  time

there are static versions of eb_sdb_find_by_identity and eb_sdb_find_by_identity_msi
the static versions can be selected by environtment variables
also all timeouts can be disabled via another environment variable

There was a bug where sdb_find_by_identity would be exported by
glue/cplusplus.cpp, but the type might not match the header,
depending on the value of EB_STATUS_OR_VOID_T.

Fixing this requires making the method inline. However, that removes
the symbol from the library, which is a breaking change to the ABI
for C++. The API remains compatible, however.