* pr/2105:
  Add OBSERVER_SCALE environment variable for HiDPI support

OTP-15586

Since Logger was introduced in OTP-21.0, menu choice Log > Toggle Log
View in observer would cause a crash unless an error_logger event
handler was explicitly installed. This is now corrected.

Observer makes use of cdv_html_wx but does not start cdv_wx first which
made it crash when trying to send a message to cdv_wx. This fix avoids
updating the status when the application using cdv_html_wx is cdv.

* siri/cdv/div-bugfixes/OTP-15391:
  [cdv] Handle multiple "Yc" lines refering to the same refc binary
  [cdv] Speed up reading of dump with many processes

* siri/cdv/truncated-literals/OTP-15377:
  [cdv] Fix handling of truncated literals

Co-authored-by: Siri Hansen <siri@erlang.org>

Usually, sub binaries are implemented as special sub binary terms
("Ys" lines). But if a sub binary is sent to another process, sub
binaries will be eliminated and incorporated into the ProcBin ("Yc"
line), and when that happens there can be several "Yc" lines that
refer to the same underlying binary object. Make sure that that the
crash dump viewer can handle multiple "Yc" lines referring to the same
binary object.

Eliminate an ets:select per process, which was used for reading
position data needed for progress reporting. Now this data is stored
in dictionary along with the last tag and id instead.