move the diagnostic location and ID out of DiagnosticInfo and store it in
the Diagnostic class. Since we can already only have one diagnostic in 
flight at a time, this shrinks DiagnosticInfo.

This reduces DiagnosticInfo to being basically a rather crazy smart pointer
to a DiagnosticInfo :)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59798 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed