[Emacs-ada-mode] ada-mode search algorithm for .adp

[Stephen Leake]

Currently, the "search algorithm" for finding Emacs ada-mode project files
is only used once, for the first invocation of an ada-mode build
command. After that, ada-prj-default-project-file is always set, so
the search is not performed. To change project files, you must invoke
Ada | Project | Load. Or do the equivalent in lisp. To get the search
algorithm to run again, you have to restart Emacs (or do some fairly
obscure lisp hacking).

That means the search algorithm is pretty pointless.

Which, in turn, means people are clearly not relying on it.

So, a survey; for people using Emacs ada-mode project files, how would
you _like_ to have Emacs find out about them? 

I think the current search algorithm is fairly reasonable, if it was
used more consistently. 

If people want a real search algorithm, it should not be hard to fix.
But it would be easier to just delete it :).

-- 
-- Stephe