Merge lp://qastaging/~brianaker/libdrizzle/api-reworking into lp://qastaging/libdrizzle

configure.ac (+1/-0)
libdrizzle-5.1/drizzle.h (+0/-11)
libdrizzle-5.1/drizzle_client.h (+4/-20)
libdrizzle-5.1/include.am (+0/-1)
libdrizzle/common.h (+1/-0)
libdrizzle/conn.cc (+9/-9)
libdrizzle/drizzle.cc (+55/-60)
libdrizzle/drizzle_local.h (+6/-37)
libdrizzle/handshake_client.h (+0/-4)
libdrizzle/include.am (+5/-0)
libdrizzle/statement.cc (+1/-1)
m4/ax_pthread.m4 (+313/-0)
rpm/spec.in (+0/-1)
tests/unit/binlog.cc (+5/-5)
tests/unit/column.c (+5/-5)
tests/unit/connect.c (+5/-5)
tests/unit/connect_uds.c (+5/-4)
tests/unit/insert_id.c (+5/-5)
tests/unit/query.c (+5/-5)
tests/unit/row.c (+5/-5)
tests/unit/statement.c (+5/-5)
tests/unit/statement_char.c (+5/-5)
tests/unit/unbuffered_query.c (+5/-5)