Conflicts:
	src/box/box.cc
	src/box/cluster.cc
	src/lib/small

server_id should be checked in on_replace trigger instead of
box_on_cluster_join().

With recent osx toolchains gcc is an alias for clang.

Test_suite restart disabled
Legacy tests moved to separated suite

Conflicts:
	src/box/request.cc
	src/lib/small

added tests

No need to use filesystem notifications to discover updates to WAL when
the party writing the WAL is ourselves (the same process).

Wal writer updated to provide a notification mechanism based on
ev_async, replication relays subscribe to it.

Log messages should be emited in extended format after box.cfg even to
stderr.

Change the code to use small/rlist.h, to avoid code duplication.
small is self-contained.

Now that util.c is linked with libcore, split out
backtrace.cc from it. backtrace.cc depens on libbfd, and
we'd like the core to be standalone.

Doing box.cfg{background=true, logger='/EACCESS.log'} resulted in a
silent failure because initialization routine closed stderr first before
initializing the logger.

Changing stuff to absolutize pathes (logger, pid_file) to make it easier
to troubleshoot errors.

Things in say.c (logger guts) were changed to call exit instead of _exit
on failure in order for the cleanup to be performed.

Also adding a library for managing pid files under
third_party/libutil_freebsd.

Provide a default instance in the installation script, but don't
start it.

Now that we have a very nice title, don't use a custom proc title that
often.

Follow up fixes.
Signature changes for txn_commit_stmt(), move the check
for secondary keys to be engine-agnostic.

*)also fixed delete via secondary key
*)moved xlog creation from txn_begin_stmt to txn_commit_stmt