Update tests to use %clang instead of 'clang', and forcibly disable use of '
clang ' or ' clang -cc1 ' or ' clang-cc ' in test lines (by substituting them to
garbage).

llvm-svn: 91460
diff --git a/clang/test/Lexer/has_feature_exceptions.cpp b/clang/test/Lexer/has_feature_exceptions.cpp
index 231a6c56..cfd1efb 100644
--- a/clang/test/Lexer/has_feature_exceptions.cpp
+++ b/clang/test/Lexer/has_feature_exceptions.cpp
@@ -1,5 +1,5 @@
-// RUN: clang -E -fexceptions %s -o - | FileCheck --check-prefix=CHECK-EXCEPTIONS %s
-// RUN: clang -E -fno-exceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
+// RUN: %clang -E -fexceptions %s -o - | FileCheck --check-prefix=CHECK-EXCEPTIONS %s
+// RUN: %clang -E -fno-exceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
 
 #if __has_feature(cxx_exceptions)
 int foo();