Add an API on ValueObject to generate a 'synthetic child' of base class type. Note that in this commit, the term synthetic child is not meant to refer to data formatters, but to the programmatically-generated children stored inside a ValueObject itself

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@216483 91177308-0d34-0410-b5e6-96231b3b80d8
[dwarf] Add new language enumerations.

This updates the DWARF language identifiers to include recent additions to
the DWARF 5 specification (draft).


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@216486 91177308-0d34-0410-b5e6-96231b3b80d8
It was pointed out to me that an offset of 0 makes sense for ObjC, but not always for C++, and this API claims to be general enough that it should not drop C++ usability on the floor for no good reason. Fix it with an explicit offset argument

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@216487 91177308-0d34-0410-b5e6-96231b3b80d8