stack size computation and relative rather than absolute imports.

or vice versa.

attribute is not found.  This change simplifies the signature of get(),
__getitem__(), and __getattr__(), and fixes the bug.

  - Tiny cosmetic changes (trailing whitespace after '#'), hoping also
    to remove the executable permission from these modules (none are
    designed to run as scripts).

function at least as conservatively as the standard compiler does.  Note
that this test currently fails for list comprehensions.

Timed modes no longer require a start and an end.  If a start and an end
is not specified, the start time will be considered the first time
encountered in the set of log files and the end time will be considered
the last time encountered.

The default resolution for timed mode is now 60 seconds.

Add a function to recompile all Scripts that need it.  It is invoked by visiting /manage_addProducts/PythonScripts/recompile in a browser.

Fix RestrictedPython.compiler stacksize computations, which could cause segmentation faults when incorrect.  Incremented PythonScripts magic number to force recompilation of Scripts.

Fixed the examples to work with ZPT path updates. Also changed the location of the examples from the var directory to the import directory. Also updated the import directory's readme.

Changed first and last example to be clearer. Documented the fact that the last path in an alternate path experssion doesn't need to be a path at all.

Refactor Path expressions, make them support other expression types as the final alternate, and support Iterator.first() and last().

  - Suppress raise of Undefined when the expression is an 'exists:'.

  - Stash referenced object, rather than bound method, as local value
    for iterator.