The globals need to be forwarded from the caller's context.

Signed-off-by: Damien George <damien@micropython.org>

`globals()` needs to be provided in case `__import__` is a Python function.

Currently, dict views (eg `dict.keys()`, `dict.values()`) do not implement
the `bool` or `len` unary operations.  That may seem like a reasonable
omission for MicroPython to keep code size down, but it actually leads to
silently incorrect bool operations, because by default things are true.

Eg we currently have:

    >>> bool(dict().keys())
    True

which is wrong, it should be `False` because the dict is empty.

This commit implements `bool` and `len` unary operations on dict views by
simply delegating to the existing dict unary op function.

Fixes issue micropython#12385.

Signed-off-by: Damien George <damien@micropython.org>

The currently documentation for ilistdir tuples says that the size element
is included based on the platform. However, this is not the case as it is
included based on the filesystem type. This commit makes the according
adjustment.

Fixes issue micropython#17516.

Signed-off-by: Alex Tran <alex.t.tran@gmail.com>

RP2350 builds were using the incomplete `rp2_af.csv` alt function table
(originally made for RP2040) which broke pins > 31 in RP2350B (48-pin
QFN-80) builds:

    >>> machine.Pin(31)
    Pin(GPIO31, mode=IN, pull=PULL_DOWN)

    >>> machine.Pin(32)
    Pin(GPIO32, mode=ALT, pull=PULL_DOWN, alt=31)

To fix this, separate alt-functions tables for RP2350 and RP2350B are added
in this commit.

UART_AUX (alt function 11) was also missing, along with XIP_CS1 and
CORESIGHT_TRACE, and they are  now added as well.

Signed-off-by: Phil Howard <github@gadgetoid.com>
Signed-off-by: Damien George <damien@micropython.org>