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) Replaced "early" (before LM) checkouts with "late" (inside LM) ones.
3) Removed the mutex protection that's no longer necessary.
Note: the new LM contains some future code (currently commented out) which will be enabled and tested after the Alpha release.
1) Make memory counters aggregated.
2) Add attachment pool and allocate appropriate resources out of this pool.
3) Always release attachments explicitly (via destructor).
4) Always delete user requests prior to attachment deletion.
5) Introduce memory usage counters per every monitoring object.
6) Misc refactoring.
Some pieces are still incomplete (although everything basically works), but I'd like to get feedback and testing sooner rather than later.
2) Remove internal y-valve function INTERNAL_COMPILE_REQUEST
3) Go direct to engine internals from DSQL, without need to exit/enter the attachment lock and check exceptions in status vector
