related with local events from isc_sync.cpp.
2. Cleanup - removed unused parameter 'number of events' from ISC_event_wait()
and two unused parameters from ISC_event_init().
3. Added SYSV-semaphore based implementation of IPC to isc_sync.cpp.
This should fix CORE-2102: Firebird 2.5 does not build on MacOS (Darwin).
4. Fixed use of posic CS without (x)inetd (i.e. fb_inet_server -s).
5. Fixed (to be reviewed by Dmitry) recovery after some process death in lock manager.
2. Introduce new private API calls, fb__shutdown() and fb__shutdown_callback().
3. Introduce fb_smp_server - binary to run superclassic on posix.
4. Various cleanups.
ThreadData.cpp - thread control class to use in Client
thd.cpp - thread control class to use in Server
To avoid making global visibility of a lot of THD_* ISC_event and so functions in libfbclient.so
(Can be breakable but needed)