branches/5.1:

Merge a part of r2911.5.5 from MySQL:
(the other part of this was merged in c5700)

  ------------------------------------------------------------
  revno: 2911.5.5
  committer: Vladislav Vaintroub <vvaintroub@mysql.com>
  branch nick: 5.1-innodb_plugin
  timestamp: Wed 2009-06-10 10:59:49 +0200
  message:
    Backport WL#3653 to 5.1 to enable bundled innodb plugin.
    Remove custom DLL loader code from innodb plugin code, use 
    symbols exported from mysqld.
  removed:
    storage/innodb_plugin/handler/handler0vars.h
    storage/innodb_plugin/handler/win_delay_loader.cc
  added:
    storage/mysql_storage_engine.cmake
    win/create_def_file.js
  modified:
    CMakeLists.txt
    include/m_ctype.h
    include/my_global.h
    include/my_sys.h
    include/mysql/plugin.h
    libmysqld/CMakeLists.txt
    mysql-test/mysql-test-run.pl
    mysql-test/t/plugin.test
    mysql-test/t/plugin_load-master.opt
    mysys/charset.c
    sql/CMakeLists.txt
    sql/handler.h
    sql/mysql_priv.h
    sql/mysqld.cc
    sql/sql_class.cc
    sql/sql_class.h
    sql/sql_list.h
    sql/sql_profile.h
    storage/Makefile.am
    storage/archive/CMakeLists.txt
    storage/blackhole/CMakeLists.txt
    storage/csv/CMakeLists.txt
    storage/example/CMakeLists.txt
    storage/federated/CMakeLists.txt
    storage/heap/CMakeLists.txt
    storage/innobase/CMakeLists.txt
    storage/innobase/handler/ha_innodb.cc
    storage/innodb_plugin/CMakeLists.txt
    storage/innodb_plugin/handler/ha_innodb.cc
    storage/innodb_plugin/handler/handler0alter.cc
    storage/innodb_plugin/handler/i_s.cc
    storage/innodb_plugin/plug.in
    storage/myisam/CMakeLists.txt
    storage/myisammrg/CMakeLists.txt
    win/Makefile.am
    win/configure.js

handler/ha_innodb.cc

@@ -941,6 +941,100 @@ innobase_get_charset(
 	return(thd_charset((THD*) mysql_thd));
 }
 
+#if defined (__WIN__) && defined (MYSQL_DYNAMIC_PLUGIN)
+extern MYSQL_PLUGIN_IMPORT MY_TMPDIR mysql_tmpdir_list;
+/*******************************************************************//**
+Map an OS error to an errno value. The OS error number is stored in
+_doserrno and the mapped value is stored in errno) */
+extern "C"
+void __cdecl
+_dosmaperr(
+	unsigned long);	/*!< in: OS error value */
+
+/*********************************************************************//**
+Creates a temporary file.
+@return	temporary file descriptor, or < 0 on error */
+extern "C"
+int
+innobase_mysql_tmpfile(void)
+/*========================*/
+{
+	int	fd;				/* handle of opened file */
+	HANDLE	osfh;				/* OS handle of opened file */
+	char*	tmpdir;				/* point to the directory
+						where to create file */
+	TCHAR	path_buf[MAX_PATH - 14];	/* buffer for tmp file path.
+						The length cannot be longer
+						than MAX_PATH - 14, or
+						GetTempFileName will fail. */
+	char	filename[MAX_PATH];		/* name of the tmpfile */
+	DWORD	fileaccess = GENERIC_READ	/* OS file access */
+			     | GENERIC_WRITE
+			     | DELETE;
+	DWORD	fileshare = FILE_SHARE_READ	/* OS file sharing mode */
+			    | FILE_SHARE_WRITE
+			    | FILE_SHARE_DELETE;
+	DWORD	filecreate = CREATE_ALWAYS;	/* OS method of open/create */
+	DWORD	fileattrib =			/* OS file attribute flags */
+			     FILE_ATTRIBUTE_NORMAL
+			     | FILE_FLAG_DELETE_ON_CLOSE
+			     | FILE_ATTRIBUTE_TEMPORARY
+			     | FILE_FLAG_SEQUENTIAL_SCAN;
+
+	DBUG_ENTER("innobase_mysql_tmpfile");
+
+	tmpdir = my_tmpdir(&mysql_tmpdir_list);
+
+	/* The tmpdir parameter can not be NULL for GetTempFileName. */
+	if (!tmpdir) {
+		uint	ret;
+
+		/* Use GetTempPath to determine path for temporary files. */
+		ret = GetTempPath(sizeof(path_buf), path_buf);
+		if (ret > sizeof(path_buf) || (ret == 0)) {
+
+			_dosmaperr(GetLastError());	/* map error */
+			DBUG_RETURN(-1);
+		}
+
+		tmpdir = path_buf;
+	}
+
+	/* Use GetTempFileName to generate a unique filename. */
+	if (!GetTempFileName(tmpdir, "ib", 0, filename)) {
+
+		_dosmaperr(GetLastError());	/* map error */
+		DBUG_RETURN(-1);
+	}
+
+	DBUG_PRINT("info", ("filename: %s", filename));
+
+	/* Open/Create the file. */
+	osfh = CreateFile(filename, fileaccess, fileshare, NULL,
+			  filecreate, fileattrib, NULL);
+	if (osfh == INVALID_HANDLE_VALUE) {
+
+		/* open/create file failed! */
+		_dosmaperr(GetLastError());	/* map error */
+		DBUG_RETURN(-1);
+	}
+
+	do {
+		/* Associates a CRT file descriptor with the OS file handle. */
+		fd = _open_osfhandle((intptr_t) osfh, 0);
+	} while (fd == -1 && errno == EINTR);
+
+	if (fd == -1) {
+		/* Open failed, close the file handle. */
+
+		_dosmaperr(GetLastError());	/* map error */
+		CloseHandle(osfh);		/* no need to check if
+						CloseHandle fails */
+	}
+
+	DBUG_RETURN(fd);
+}
+#else
 /*************************************************************************
 Creates a temporary file. */
 extern "C"
@@ -972,6 +1066,7 @@ innobase_mysql_tmpfile(void)
 	}
 	return(fd2);
 }
+#endif
 
 /*************************************************************************
 Wrapper around MySQL's copy_and_convert function, see it for