Step 14: First version of table log for add/Drop partition


sql/ha_partition.cc:
  Moved create partition name code to sql_partition.cc
sql/handler.h:
  Added entries in partition_info to keep track of table log entries
sql/mysql_priv.h:
  Moved create partition name code to sql_partition.cc
sql/sql_partition.cc:
  Moved create partition name code to sql_partition.cc
  First version of table log for add/drop partition
sql/sql_table.cc:
  Add IO_SIZE to table log header