This is used by WebKit2 backend under Unix with configure, but is not needed
under the other platforms and prevented bakefile_gen from generating all
output files due to the of undefined USE_WEBVIEW_WEBKIT2 variable.
We could define it for formats other than autoconf, but this doesn't seem to
be useful currently, so just avoid referencing it instead.
Closes#17860.
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.
If nothing else, this will make an eventual transition to Git simpler.
Closes#14487.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
