Port to platforms with gtk3 but not webkitgtk3

I ran into this problem on my Fedora 23 installation;
Emacs configured but did not build when --with-xwidgets was specified.
* configure.ac (HAVE_WEBKIT, HAVE_GIR): Omit unnecessary initializations.
(DOES_XWIDGETS_USE_GIR): New var.
If --with-xwidgets is specified, report an error if not
doable, to be consistent with the other --with options.
Require webkitgtk3 to use Xwidgets, as the Xwidgets code does
not work at all without webkitgtk3.  Simplify use of
EMACS_CHECK_MODULES.  Output message about gobject
introspection only if xwidgets are used.
* etc/NEWS: Users need webkitgtk3, not merely webkit.
* src/xwidget.c (syms_of_xwidget): Don’t worry about HAVE_WEBKIT_OSR,
since this file is no longer compiled if webkitgtk3 is not available.

1 files changed, 1 insertions, 1 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 934bc3f0859..06b32ce9ccc 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -121,7 +121,7 @@ and can contain escape sequences for command keys, quotes, and the like.
 * Changes in Emacs 25.1
 
 ** Xwidgets: a new feature for embedding native widgets inside Emacs buffers.
-If you have gtk3 and webkit-devel installed, you can access the
+If you have gtk3 and webkitgtk3 installed, you can access the
 embedded webkit browser with `M-x xwidget-webkit-browse-url'.  This
 opens a new buffer with the embedded browser.  The buffer will
 have a new mode, `xwidget-webkit-mode' (similar to `image-mode'),