[analyzer] Enable destructor inlining by default (c++-inlining=destructors).

This turns on not only destructor inlining, but inlining of constructors
for types with non-trivial destructors. Per r178516, we will still not
inline the constructor or destructor of anything that looks like a
container unless the analyzer-config option 'c++-container-inlining' is
set to 'true'.

In addition to the more precise path-sensitive model, this allows us to
catch simple smart pointer issues:

  #include <memory>

  void test() {
    std::auto_ptr<int> releaser(new int[4]);
  } // memory allocated with 'new[]' should not be deleted with 'delete'

<rdar://problem/12295363>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178805 91177308-0d34-0410-b5e6-96231b3b80d8