Bug #425, http://bugs.skysql.com/show_bug.cgi?id=425
mysqlk_client.c now assumes that mysql packets may arrive in separate pieces.
gw_read_client_event reads client data, and if packet is incomplete it is added to new dcb->dcb_readqueue. When next packet is combined with data in readqueue.

mysql_common.c:gw_MySQL_get_next_packet can now return mysql packet from read buffer although it would span multiple gwbuf buffers.
Added message printing telling what file provided the module which was loaded.
Merge branch 'master' of https://github.com/skysql/MaxScale