clang/test/Index/preamble-reparse-warn-*.c: Use @LINE in FileCheck.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@203445 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test/Index/preamble-reparse-warn-*.c: Stabilize on win32.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@203446 91177308-0d34-0410-b5e6-96231b3b80d8