Allow for vendor prefixes in a list test

Summary:
Preprocessor/init.c contains a line that explicitly checks for the
string

__VERSION__ "Clang{{.*}}

It's valid to have a toolchain configured to emit a vendor prefix
before the word Clang. e.g.

__VERSION__ "Vendor Clang{{.*}}

Subscribers: fedor.sergeev, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64772

llvm-svn: 366159

clang/test/Preprocessor/init.c

@@ -8169,7 +8169,7 @@
 // SPARC:#define __UINT_LEAST8_MAX__ 255
 // SPARC:#define __UINT_LEAST8_TYPE__ unsigned char
 // SPARC:#define __USER_LABEL_PREFIX__
-// SPARC:#define __VERSION__ "Clang{{.*}}
+// SPARC:#define __VERSION__ "{{.*}}Clang{{.*}}
 // SPARC:#define __WCHAR_MAX__ 2147483647
 // SPARC:#define __WCHAR_TYPE__ int
 // SPARC:#define __WCHAR_WIDTH__ 32