[cdt-dev] common gdb plugin

[John Cortell <rat042@xxxxxxxxxxxxx>]

It seems to me we should have a plugin to house things that are gdb
specific that  are needed equally by DSF-GDB and CDI-GDB. E.g., the
extension that contributes the gdb catchpoint types to the GUI are
currently in the CDI plugin. But they are needed for DSF-GDB. Putting it
in org.eclipse.cdt.debug.ui isn't right since that should be
backend agnostic. I imagine there are other things we could share between
DSF-GDB and CDI-GDB but currently don't.

Thoughts?
John