treatment of inline functions

[Frank Ch. Eigler]

Hi -

I'm working on bug #1570 - the one associated with our handling
of .function("...") vs .inline("...").  This incoming blurb from
src/NEWS outlines my proposed changes.  If you have better suggestions,
please speak up pronto.

- The way in which systemtap resolves function/inline probes has changed:
   .function(...) - now refers to all functions, inlined or not
   .inline(...)   - is deprecated, use instead:
   .function(...).inline - filters function() to only inlined instances
   .function(...).call - filters function() to only non-inlined instances
   .function(...).return - as before, but now pairs best with .function().call
   .statement() is unchanged.

- FChE