Postfix of previews commit, add missing file

plugin/semisync/CMakeLists.txt:
  Add CMakeLists.txt for semisync

plugin/semisync/CMakeLists.txt

+# Copyright (C) 2006 MySQL AB
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+# This is CMakeLists.txt for semi-sync replication plugins
+
+SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX")
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX")
+
+# Add common include directories
+INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include ${CMAKE_SOURCE_DIR}/zlib
+                    ${CMAKE_SOURCE_DIR}/sql
+                    ${CMAKE_SOURCE_DIR}/regex
+                    ${CMAKE_SOURCE_DIR}/extra/yassl/include)
+
+SET(SEMISYNC_MASTER_SOURCES semisync.cc semisync_master.cc semisync_master_plugin.cc)
+SET(SEMISYNC_SLAVE_SOURCES semisync.cc semisync_slave.cc semisync_slave_plugin.cc)
+
+ADD_DEFINITIONS(-DMYSQL_DYNAMIC_PLUGIN)
+ADD_LIBRARY(semisync_master SHARED ${SEMISYNC_MASTER_SOURCES})
+TARGET_LINK_LIBRARIES(semisync_master  mysqld)
+ADD_LIBRARY(semisync_slave SHARED ${SEMISYNC_SLAVE_SOURCES})
+TARGET_LINK_LIBRARIES(semisync_slave  mysqld)
+MESSAGE("build SEMISYNC as DLL")