Ignore all annotations in all scopes if source is missing (#10035)

JDT supports three kinds of annotations, and the ASTVisitor lets them be
encountered in two different scopes. This patch ensures that all six
cases are handled, and adds a test that uses each of the six cases -
removing any one of the `visit` implementations will fail the test by
incorrectly reporting the annotation as not having sources available.

Fixes #10020
See #10021

Record.equals must accept null without an error (#10016)

Fixes #10015

Disable rpc.enhancedClasses by default at runtime (#9879)

Logs warnings at compile time, indicating which classes need to be
cleaned up to remove this feature.

Mitigation for #9709

Remove unexpected sources from gwt-user by making valid servlet sourc…

…es (#9888)

Removes an old hack which uses gwt-user's sources as if they were the
correct sources for gwt-servlet by creating a real build artifact that
contains the sources which correspond to the classes found in
gwt-servlet and gwt-servlet-jakarta. This lets us avoid using gwt-user's
own sources as if they were the sources for other jars, which in turn
allows us to only package gwt-user sources in gwt-user.jar.

Fixes #9886

Correct Google poms to follow central sync requirements

Despite only being relocation poms, it appears that Sonatype requires
that the poms still follow the deployment requirements.

Change-Id: I8471f79dab42239a900a07d81912a3b337c10c6c

Distinct relocation poms and script for gwtproject vs Google

The old script, being already used in Google-managed CI, continues to
deploy poms with com.google groupId. A new script,
maven/push-gwtproject.sh, has the same contents as the old one used to
have, and deploys the org.gwtproject poms.

Samples that use maven have also been updated to use the new ltgt gwt
maven plugin and the new groupIds.

Change-Id: I0f582304faf9546ac37616a78bc7735f8beeba26

Move jsinterop-annotations source code out of GWT.

jsinterop-annotations has its own repo on github. This CL removes
the code from the gwt repo and add a dependency to the jar file
now present in tools repo. The gwt-user.jar distributed in the zip
will still contain these classes, but the maven version will correctly
reference the jar already present in maven central.

Change-Id: I5c341e1ae5ad48ea3bf8104d781b1d16fccdef4a

Deprecate all generated and handmade elemental classes

Change-Id: I1c50c64fb18c8f3b4e9a51cf2434b37a6ded08bd

Revert "Test for 'interactive' readyState during app bootstrap"

This reverts commit f47ba0e.

Reason for revert: Introduces errors in IE9, this event can go off too
soon.

Change-Id: I16256254d3a2e5b88415720fc5dd2ab83335cc56

Supress warning for Array.compare

Change-Id: I60847b035baab185ca93071f8953e4e1fb521319