[libclang] Have c-index-test output more information about a cursor with -cursor-at:

-the location of the cursor
-its extent
-its spelling

Part of radar://11113120

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153707 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed