[PATCH] Expr::IgnoreImpCasts should also ignore CXXConstructorCalls for implicit copy constructor calls

[Jochen Eisinger]

  Manuel asked offline what exactly is not handled

  as far as I can see Stmt::IgnoreImplicit only skips ExprWithCleanups and ImplicitCastExpr, none of which is a base class of CXXConstructExpr

http://llvm-reviews.chandlerc.com/D720