including client code into embedded server
code to guess what library to use added
net_field_length moved to pack.c


include/mysql.h:
  typedefinitions moved for suitability
  mysql_option.methods_to_use added
include/mysql_com.h:
  net_store_length declaration
libmysql/libmysql.c:
  net_store_length moved to sql-common/pack.c
libmysqld/libmysqld.c:
  added code to guess whether to use remote or embedded connection
sql-common/client.c:
  options checking added
sql-common/pack.c:
  net_store_length implementation moved here
sql/protocol.cc:
  net_store_length moved to sql-common/pack.c