Endeavour to make the windows test bot actually able to run tests.

Endeavour to make the windows test bot actually able to run tests.
https://bugs.webkit.org/show_bug.cgi?id=86772

Reviewed by Sam Weinig.

Source/WebCore:

Use WEBKIT_EXPORT to get correct export behaviour on windows, rather than
relying on the .def files.

* bindings/js/JSDOMGlobalObject.h:
(JSDOMGlobalObject):
* bindings/scripts/CodeGeneratorJS.pm:
(GenerateHeader):

Source/WebKit2:

Remove the ClassInfo exports from the .def files as we're now using
WEBKIT_EXPORT declarations to get expected behaviour on windows.

* win/WebKit2.def:
* win/WebKit2CFLite.def:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@117504 268f45cc-cd09-0410-ab3c-d52691b4dbfc