Tests: fix unittest build and include BMemoryRingIO shared tests

When change 2966 was merged as hrev56269, it was decided to first introduce
this in libshared instead of libbe.so. The test was moved accordingly, but
not all the code in the unittests was properly updated. This change completes
it.

Note that the test currently crashes, so it needs more investigation whether
that is a test issue or a BMemoryRingIO issue. Fixing this is beyond the
scope of this change.

Change-Id: I0f61d1dd013da904b3e4545db11fefa9da2da0a2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5676
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

libnetservices.a: fix unit test builds after hrev54923

HaikuDepot: LRU Cache for Icons

Only keep a fixed number of icons in memory at once.

Completes To #15370

Change-Id: I23e3a4fa7559894034f45afb3b536910ea037078
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3367
Reviewed-by: Rene Gollent <rene@gollent.com>

BKeymap: Add unit tests and fix issues

Add a preliminary set of unit tests for BKeymap and fix these issues:

* BKeymap::operator=() caused a crash by allocating a zero-byte array to hold
the other object's character data.
* BKeymap::SetToCurrent() and SetToDefault() leaked memory by not freeing an
existing character array before allocating a new one.
* BKeymap::SetToCurrent() incorrectly determined the size of the current
keymap's character array, causing GetChars() to fail whenever the current
keymap was loaded. Now SetToCurrent() uses the _get_key_map() private
function, which accurately reports the size of the array.

This commit also updates a Jamfile by replacing a use of "UseHeaders" to
include private header files with the more concise and expressive
"UsePrivateHeaders".

Change-Id: If6f71b209f1bd395be57835c4dd89f0e3f845994
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1724
Reviewed-by: Ryan Leavengood <leavengood@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Reviewed-by: Stephan Aßmus <superstippi@gmx.de>

Implementation of JSON Streaming Parser

This change will introduce a streaming parser capability to Haiku. The
existing functionality of writing the JSON data to a BMessage in-memory
model is retained. The new parser implements a SAX-style listener based
interface where the listener accepts parse events. Unit tests have been
supplied for the JSON parser as well.

DriverSettingsMessageAdapter: fixed various issues.

* _AddParameter() would ignore all BMessage::Add*() errors.
* _ConvertFromDriverParameter() would ignore most intermediate error,
but would fail badly over some incorrect settings file.
* Also, it checked for the parent value for each parameter, which
doesn't make any sense, but would add as often as there are
parameters -- which also may be none, in which case the value
got ignored.

Move geolocation test to the shared kit tests.

* Fix the build.

Add setters to BDate and BCalendarView

* BDate setters don't perform any validation, use with caution.
* BCalendarView setters do perform validation checks, and will adjust
the day so it fits the requested month or year.
* Add tests for the BCalendarView setters.

Added unit tests for NaturalCompare() that currently fail.

DriverSettingsMessageAdapter: fixed various issues.

* _AddParameter() would ignore all BMessage::Add*() errors.
* _ConvertFromDriverParameter() would ignore most intermediate error,
but would fail badly over some incorrect settings file.
* Also, it checked for the parent value for each parameter, which
doesn't make any sense, but would add as often as there are
parameters -- which also may be none, in which case the value
got ignored.

Move geolocation test to the shared kit tests.

* Fix the build.

Add setters to BDate and BCalendarView

* BDate setters don't perform any validation, use with caution.
* BCalendarView setters do perform validation checks, and will adjust
the day so it fits the requested month or year.
* Add tests for the BCalendarView setters.

Added unit tests for NaturalCompare() that currently fail.