Split copy of result files to avoid shell limit.
  Added copy of mysql-test/std_data/ndb_backup5{0,1}.
configure.in:
  Look for dlopen() even if --with-mysqld-ldflags constains "-static",
  as this is not the same as the flag to "ld", it just informs
  "libtool" to link static with libraries created part of the build,
  even if there exists shared versions.