Update the version to 3.0.2 and rebake everything.

This is the result of running misc/scripts/inc_release and bakefile_gen.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76717 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775