iteration over all symbols exported

- Added PyMac_StopGUSISpin and have it called at exit time (fixes crash
  when exiting with sockets open)
- Added PLstr... funcs needed by gusi: those provided by StdCLib are
  broken under cfm68k

tags for them.

do_recent, don't display entries without a last-changed-date.

few places where we don't know how to test for them without losing
speed; don't know yet how to handle that.

PyErr_Clear().  Add checking of those errors.

instead of calling PyErr_Clear().  Add checking of those errors.

instead of calling PyErr_Clear().  Add checking of those errors.

PyErr_Clear().

Added a generic error handler function.
Added cookie support to preserve author's name and email.

Added "Reload this entry" link to edit complete screen.

- Fixed broken HTML in edit form that swallowed <BR> tags
- Removed "another one" link in roulette, replaced with "use Reload" message
- show() now has edit=1 by default; changed all calls
- Display last-changed date, author, email when present and edit=1
- Added back pointers at bottom
- Added a copy of the bootstrap script at the end of the file