Since it will become a stream in a little bit, it should behave like all
non-trivial stream classes, who are not primarily intended to have
shared ownership to make closing behavior more predictable. Across all
uses of MappedFile, there is only one use case of shared mapped files in
LibVideo, which now uses the thin SharedMappedFile wrapper.
This will make it easier to support both string types at the same time
while we convert code, and tracking down remaining uses.
One big exception is Value::to_string() in LibJS, where the name is
dictated by the ToString AO.
We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
Previously, we would only resolve libraries from `/usr/lib`, which is
not the only path from which the crashed process could've loaded the
libraries from.
Previously we rejected all entries from Loader.so even if the faulting
address was located in it, i.e. the actual issue was with the dynamic
loader. We no longer do that to make debugging Loader crashes easier.
Some coredumps take a long time to symbolicate, so let's show a simple
window with a progress bar while they are loading.
I'm not super happy with the factoring of this feature, but it's an
absolutely kickass feature that makes crashing feel 100% more responsive
than before, since you now get GUI feedback almost immediately after a
crash occurs. :^)
