Hello,

This patch adds an internal_warning() function to GDB.  It's behavour is 
identical to internal_error() (quit? dump core?) only, at the end, it 
doesn't throw an error, instead returning to the caller.

A programmer would call internal_warning() when things are bad but still 
recoverable.  Eg, a deprecated function is called and needs to be 
reported to the user.

If you look carefully, you'll notice that the patch includes a mechanism 
that will allow the quit/core-dump behavour to be controlled at runtime 
via commands.  It doesn't yet add the commands, that will be a separate 
patch/proposal (I maxed out on patch size :-).

I'm working on gdbint doco but separatly.  The patch does at least add 
documentation for the ``maint internal-error'' and ``maint 
internal-warning'' commands.

It includes a testcase.

thoughts?
doco ok?
testsuite ok?

Andrew