EXTENSION - lmdb-backend: stack backtrace on SIGSEGV and friends (optional).
Silence compiler warning by adding explicit return 0 to ppolicy_db_destroy
Fix pointer incompatibility issue on some platforms

Don't assume tv_sec is a time_t.
closedir() replacement function should return a result

return success, ignoring result of FindClose
ITS#7967 fix abandon regression

From ITS#7712, avoid double-free of request
Fix a1e3b1cf3c5991ef550f608ee816e9274e547dda

copy/paste error
Fix typo in cancel config
 ! debugging crutchs, MUST be removed before release.

   LY_DEBUG;
   conditionally enforce MDB_LIFORECLAIM & MDB_COALESCE;
   test pattern hack (this crunch MUST be remove later);
   asserts for check reclaimable;
   inject SIGSERV on 42th checkpoint;
   added Yota's lmdb-tests;
backend += MDB_OOMKILL
lmdb += MDB_OOMKILL
+ void mdb_showinfo(MDB_env *env, int rdrinfo, int freinfo)
+ alter sync/repl logging;
try
bugfix: reader-txn race (нужно почистить);