Adding a new API call IsTypeComplete() to SBType. This call is meant to check...

Adding a new API call IsTypeComplete() to SBType. This call is meant to check if the type has been previously completed or not (which is mostly interesting from a performance point of view)

Adding a test case that checks that we do not complete types before due time. This should help us track cases similar to the cascading data formatters.

llvm-svn: 153363