Add specialisation iterators for {Class,Function}TemplateDecl

This patch introduces the ClassTemplateDecl::spec_{begin,end}()
and FunctionTemplateDecl::{,partial_}spec_{begin,end}() member
functions as a public interface for iterating over the declarations'
specialisation sets.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109870 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed