Previously, the printf warnings would say your arguments type was 'int' when it was really a 'char'

or a 'short'. This fixes that and allows the hints to suggest 'h' modifiers for small ints.

Patch by Justin Bogner!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116996 91177308-0d34-0410-b5e6-96231b3b80d8