Fix bug when server hang(with SSL, with modified libmysql)
Add options master-ssl-capath and master-ssl-cipher
Add some error checking(SSL) 


include/errmsg.h:
  Error code for SSL connection
include/violite.h:
  Change return value in sslaccept
  Remove unused variable open_
libmysql/errmsg.c:
  Add client side descriptive message when ssl handshake fail
libmysql/libmysql.c:
  Add ssl error code
  Add proper error checking
sql/mysqld.cc:
  Add options master-ssl-capath and master-ssl-cipher
sql/sql_parse.cc:
  Add error checking after sslaccept
vio/viossl.c:
  Add ssl handshake error cheking
vio/viosslfactories.c:
  Change error description when using wrong key or certificate