2. Reworked error checking in initposix() and initnt().

	module.

substituted the appropriate PyArg_Parse calls.  Retested.  All appears well.

proper functions as defined in rename2.h.  Thanks Barry!

sequence, otherwise

operator.indexOf([4, 3, 2, 1], 9) would raise a SystemError!

Note: it might be wise to double check all these functions.  I haven't
done that yet.

options.  Also added two: %n and %t (newline and tab character).

triggering a bogus TestFailed exception.

Watch it, Barry! :-)

(py-delete-char): funcall py-delete-function.

style corrections, I presume), found by Jack.  Added warning that this
has not been tested (Jack could only compile and link it).

This is needed because if a configure option has " as its value,
it will be rendered as {"}; after stripping one level of quoting it's
just ", on which splitlist will barf.