Inline the Result::Unuse member function and change the Result...

Inline the Result::Unuse member function and change the Result
destructor to no longer invalidate the result.


Committed: http://code.google.com/p/v8/source/detail?r=1560

[Kevin Millikin (Chromium), 2009-03-20 10:31:14]

This change isn't as big as it looks, it's all in the includes.  Here's a
resume:

virtual-frame.h now needs to have register-allocator-inl.h included after it, so
I've made r-a-inl.h include v-f.h and changed all included of v-f.h to
r-a-inl.h.

I've also changed all includes of codegen.h to codegen-inl.h.  There's nothing
in that file right now except the "Comment" class, but if we ever put inline
codegen member functions there we will want it included wherever codegen.h is
now.

[Erik Corry, 2009-03-20 12:52:59]

LGTM