BUG: Fix astype for structured array fields of different byte order.

The offending commit is c53b0e4, which introduced two regressions:

- using astype to cast a structured array to one with a different byte
  order no longer works;
- comparing structured-array dtypes can give incorrect results if the
  two dtypes have different byte orders.

This pull request should fix both.

One thing I wasn't sure about is reordering struct fields.  In my
implementation, the `equiv`, `same_kind`, and `safe` rules are now
allowed to reorder fields.  If that isn't desired, though, it's a pretty
easy change.

0 files changed, 0 insertions, 0 deletions