Add support of vanilla Galera v.3 (api v25)

Now we could work with 'libgalera_smm.so' from mysql 5.x
(but not from mariadb, as it uses galera with api v26).

src/replication/CMakeLists.txt

@@ -21,6 +21,7 @@ ADD_LIBRARY ( repli_stuff STATIC wsrep_cxx.cpp wsrep_cxx.h wsrep_cxx_int.h
 		send_files.h send_files.cpp
 		cluster_commands.h
 		recv_state.h recv_state.cpp
+		wsrep_v25.cpp
 		wsrep_v31.cpp
 )
 

src/replication/wsrep_cxx.cpp

@@ -260,6 +260,9 @@ Wsrep::Provider_i* Wsrep::MakeProvider ( Wsrep::Cluster_i* pCluster, CSphString
 	if ( !tLoader.m_pLibrary )
 		return nullptr;
 
+	if ( tLoader.m_iIfaceVer == 25 )
+		return MakeProviderV25 ( std::move ( tLoader ), pCluster, std::move ( sName ), szListenAddr, szIncoming, szPath, szOptions );
+
 	if ( tLoader.m_iIfaceVer == 31 )
 		return MakeProviderV31 ( std::move ( tLoader ), pCluster, std::move ( sName ), szListenAddr, szIncoming, szPath, szOptions );
 

src/replication/wsrep_cxx_int.h

@@ -449,4 +449,6 @@ Wsrep::Provider_i* MakeProvider ( WsrepLoader_t tLoader, Wsrep::Cluster_i* pClus
 	return pProvider.release();
 }
 
+Wsrep::Provider_i* MakeProviderV25 ( WsrepLoader_t tLoader, Wsrep::Cluster_i* pCluster, CSphString sName, const char* szListenAddr, const char* szIncoming, const char* szPath, const char* szOptions );
+
 Wsrep::Provider_i* MakeProviderV31 ( WsrepLoader_t tLoader, Wsrep::Cluster_i* pCluster, CSphString sName, const char* szListenAddr, const char* szIncoming, const char* szPath, const char* szOptions );

src/replication/wsrep_documentation/wsrep_api_h.txt

@@ -1 +1,3 @@
 wsrep v31: https://raw.githubusercontent.com/percona/wsrep-API/2c211e1aad315e3118969beada4d4767118be88f/wsrep_api.h
+wsrep v25: https://raw.githubusercontent.com/codership/wsrep-API/eab2d5d5a31672c0b7d116ef1629ff18392fd7d0/wsrep_api.h
+wsrep v26: https://raw.githubusercontent.com/codership/wsrep-API/694d6ca47f5eec7873be99b7d6babccf633d1231/wsrep_api.h