ERROR: preinst
This package will overwrite one or more files that may belong to other
packages (see list below). You can use a command such as `portageq
owners / <filename>` to identify the installed package that owns a
file. If portageq reports that only one package owns a file then do
NOT file a bug report. A bug report is only useful if it identifies at
least two or more packages that are known to install the same file(s).
If a collision occurs and you can not explain where the file came from
then you should simply ignore the collision since there is not enough
information to determine if a real problem exists. Please do NOT file
a bug report at http://bugs.gentoo.org unless you report exactly which
two packages install the same file(s). Once again, please do NOT file
a bug report unless you have completely understood the above message.

Detected file collision(s):

	/usr/include/webkit-1.0/webkit/webkitsecurityorigin.h
	/usr/include/webkit-1.0/webkit/webkitwebpolicydecision.h
	/usr/include/webkit-1.0/webkit/webkitdownload.h
	/usr/include/webkit-1.0/webkit/webkitwebdatabase.h
	/usr/include/webkit-1.0/webkit/webkitwebsettings.h
	/usr/include/webkit-1.0/webkit/webkitwebview.h
	/usr/include/webkit-1.0/webkit/webkitgeolocationpolicydecision.h
	/usr/include/webkit-1.0/webkit/webkitwebbackforwardlist.h
	/usr/include/webkit-1.0/webkit/webkitwebhistoryitem.h
	/usr/include/webkit-1.0/webkit/webkitnetworkrequest.h
	/usr/include/webkit-1.0/webkit/webkitwebframe.h
	/usr/include/webkit-1.0/webkit/webkitwebresource.h
	/usr/include/webkit-1.0/webkit/webkitwebinspector.h
	/usr/include/webkit-1.0/webkit/webkitnetworkresponse.h
	/usr/include/webkit-1.0/webkit/webkitwebdatasource.h
	/usr/include/webkit-1.0/webkit/webkitwebwindowfeatures.h
	/usr/include/webkit-1.0/webkit/webkitsoupauthdialog.h
	/usr/include/webkit-1.0/webkit/webkitenumtypes.h
	/usr/include/webkit-1.0/webkit/webkitwebnavigationaction.h
	/usr/include/webkit-1.0/webkit/webkithittestresult.h
	/usr/include/webkit-1.0/webkit/webkiterror.h
	/usr/include/webkit-1.0/webkit/webkitversion.h
	/usr/include/webkit-1.0/webkit/webkit.h
	/usr/include/webkit-1.0/webkit/webkitdefines.h
	/usr/include/webkit-1.0/JavaScriptCore/WebKitAvailability.h
	/usr/include/webkit-1.0/JavaScriptCore/JSContextRef.h
	/usr/include/webkit-1.0/JavaScriptCore/JSObjectRef.h
	/usr/include/webkit-1.0/JavaScriptCore/JSStringRefBSTR.h
	/usr/include/webkit-1.0/JavaScriptCore/JSValueRef.h
	/usr/include/webkit-1.0/JavaScriptCore/JavaScriptCore.h
	/usr/include/webkit-1.0/JavaScriptCore/JSStringRefCF.h
	/usr/include/webkit-1.0/JavaScriptCore/JSBase.h
	/usr/include/webkit-1.0/JavaScriptCore/JSStringRef.h
	/usr/include/webkit-1.0/JavaScriptCore/JavaScript.h
	/usr/share/webkit-1.0/resources/error.html
	/usr/lib64/pkgconfig/webkit-1.0.pc

Searching all installed packages for file collisions...

Press Ctrl-C to Stop

net-libs/webkit-gtk-1.3.6
	/usr/include/webkit-1.0/webkit/webkitdownload.h
	/usr/include/webkit-1.0/webkit/webkitenumtypes.h
	/usr/include/webkit-1.0/webkit/webkitgeolocationpolicydecision.h
	/usr/include/webkit-1.0/webkit/webkithittestresult.h
	/usr/include/webkit-1.0/webkit/webkitnetworkrequest.h
	/usr/include/webkit-1.0/webkit/webkitnetworkresponse.h
	/usr/include/webkit-1.0/webkit/webkitsecurityorigin.h
	/usr/include/webkit-1.0/webkit/webkitsoupauthdialog.h
	/usr/include/webkit-1.0/webkit/webkitwebbackforwardlist.h
	/usr/include/webkit-1.0/webkit/webkitwebdatabase.h
	/usr/include/webkit-1.0/webkit/webkitwebdatasource.h
	/usr/include/webkit-1.0/webkit/webkitwebframe.h
	/usr/include/webkit-1.0/webkit/webkitwebhistoryitem.h
	/usr/include/webkit-1.0/webkit/webkitwebinspector.h
	/usr/include/webkit-1.0/webkit/webkitwebnavigationaction.h
	/usr/include/webkit-1.0/webkit/webkitwebpolicydecision.h
	/usr/include/webkit-1.0/webkit/webkitwebresource.h
	/usr/include/webkit-1.0/webkit/webkitwebsettings.h
	/usr/include/webkit-1.0/webkit/webkitwebview.h
	/usr/include/webkit-1.0/webkit/webkitwebwindowfeatures.h

Package 'net-libs/webkit-gtk-1.2.7' NOT merged due to file collisions.
If necessary, refer to your elog messages for the whole content of the
above message.