Teach -fixit to modify all of its inputs instead of just the main file, unless
-fixit-at specified a particular fixit to fix, or the -o flag was used.

llvm-svn: 101359
diff --git a/clang/test/FixIt/fixit-pmem.cpp b/clang/test/FixIt/fixit-pmem.cpp
index 0926309..8dfab8f 100644
--- a/clang/test/FixIt/fixit-pmem.cpp
+++ b/clang/test/FixIt/fixit-pmem.cpp
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -pedantic -fixit %s -o - | %clang_cc1 -fsyntax-only -pedantic -Werror -x c++ -
+// XFAIL: *
 
 /* This is a test of the various code modification hints that are
    provided as part of warning or extension diagnostics. All of the