Removed bits of cedet and semantic configurations that don't work.

Added comments regarding how well (or not) semanticdb is working on my
projects.
Ctrl-g is used to escape various actions in emacs, so don't bind it to
do something else!

Using M-g to goto line instead.
Docs links for xcscope.
Found a clang-based autocomplete for c/c++.

Not sure how well it works, but should give it a proper test at some
point, without having numerous other semantic/cscope/whatever
auto-complete sources in place.
The finder.sh script was always running on a single hard-wired project.

Fixed so it runs relative to it's current location.
Script that will run all finders in my main projects directory.

Could be added to a cron job. Should have a think about running the
finders dynamically from emacs to keep the databases up to date.