Conflicts:
	src/iproto.cc

When selecting the next buffer to flush, take into account not
just its size, but how much of it has already been flushed.
This saves a couple syscalls per connection per event loop.

Display how much memory is used by a fiber, and the total size.

Iproto + wal permission test case
Wal writer bug fix port from 1.6.6

remove unused config

gh-613 replication conflict test cases

gh-613 after review fixes

microsleep for CRDT test case, test-run updated

CRDT fix

*)added strnptr (str+len=>ptr) mhash instaniation into assoc lib

Don't malloc(), this code should never be used for unbounded
sizes.

Conflicts:
	src/lua/session.cc
	src/session.cc

- add a test case for authentication trigger
- pass user name to the trigger
- invoke trigger before the current user has been changed
- after review fixes