CEDET on menu bar

[Chong Yidong]

Now that the dust has mostly settled on the CEDET merge, I'd like to
address the issue of entering CEDET via the menu-bar.

There are two possibilities: putting CEDET in the Options menu or
putting it in the Tools menu.

Conceptually, it would be cleaner to put CEDET in the Tools menu,
alongside the other development-related commands like "compile", "gdb",
etc.

However, unlike the other items in the Tools menu, which are one-off
commands, Semantic and EDE are minor modes.  They can be toggled, just
like the items in the Options menu.  It would also be nice to be able to
use the "Save Options" menu item to enable Semantic and EDE across
sessions.

What do people think?